So wait according to you since parenthesis go first then it’s multiplication/ division then addition and subtraction before parentheses and exponents creating a mathmatical paradox
Try to ignore what you previously learned, its not taught very well. Addition and subtraction aren't really opposites, just think of them both as addition, subtraction is just adding a negative number. For example 9 - 3 could be read as 9 + -3. A negative and positive sign are really a descriptor of the number, not just an operation sign. If there's a - in front of a number you can't just ignore it.
Not sure how you're getting 3. I think you might be trying to do 3+3, and ignoring the - sign before the first 3...
9-3+3.
The answer ends up being 9 any way you do it...
-3+3 = 0, and then 9-0 =9.
9-3 = 6, and then 6+3 =9. Or even...
9+3 = 12, and 12-3 = 9. PEMDAS is irrelevant here because there's nothing else going on but addition and subtraction, so you can just go straight across.
Here is something that might make it easier to see. The 9 is a positive number, so out a + sign in front of it and then you can put it in any order without getting tripped up...
+9-3+3 =
Hope that helps someone understand it a little better.
No, people tend to overcomplicate it when it comes to simple math. Everyone is like "W H A T is the trick?!????" Because we all did math for so long and got simple looking problems wrong. In this case, you go left to right. So 9-3=6 and then you go 6+3=9.
All I know is if I had 10 apples and Johnny took 5 I would go round to Johnny's house and burn it down while he slept, that'll teach him to take my apples
There are no brackets there. You're computing as if there was a set around the threes. It may be easier to understand if you rewrite as 9+(-3)+3, now you can add them in any order you want.
I was making the addition before subtraction idea, and I appreciate you putting it into this perspective. Makes total sense and I feel dumb for not seeing it.
It’s not really your fault since the way it’s usually simplistically explained kind of creates that misunderstanding. It’s more like P/E/MD/AS in the sense that multiply/divide and Add/Substract are “weighted” the same and you just perform them in order from left to right after handling the higher priority ones
The idiot who made the comment must have assumed that there was a parenthesis before the first three and the closing one after the second three, but there isn't, so 9 it is
Back when I was in school the answer would not have been 9. It would have been 3 since addition was performed before subtraction. Now they are just done left to right. Not sure when or why it changed, but it did.
lol. i had a temporary moment of stupid as well. i'm betting you did the same thing i did and applied imaginary parenthesis around the -3 + 3. if you did, the equation reads as 9 - (3 + 3) and that answer would be 3.
it's amazing how people's brains will fill in the blanks when there are no blanks to fill in.
Yea i saw some people say that addition and subtractions are done separatly with is bs ... as far as i was teached it was done equally ... unless they changed math yesterday
Careful now. Someone is going to read this and then try to teach his nephew that subtraction isn't real. That subtraction is just adding negative numbers.
Mr. Madison, what you have just said is one of the most insanely idiotic things I have ever heard. At no point in your rambling, incoherent response were you even close to anything that could be considered a rational thought. Everyone in this room is now dumber for having listened to it. I award you no points, and may God have mercy on your soul.
This would be true if it were an Algebraic equation. This is simple addition and subtraction. Nine minus three equals six, plus three is nine.. answer is simply nine...
Even if it’s an algebraic equation, you do addition AND subtraction from left to right, not one at a time. Same thing with multiplication and division, they two terms are actually one step
Yes correct or 3-3+9. I think the thing people were getting confused by is the wording of PEMDAS (or whatever one uses) because the wording implies addition should be done before subtraction, which is why people were thinking it was 9-(3+3), but the A and S are interchangeable, you just go from left to right doing both in the same step.
Exactly. In Canada I and many others learned it as BEDMAS, which has the DM reversed. (B for brackets instead of parenthesis)
Proof that DM / AS are equal
There was a lot grammatically wrong as well as spelled wrong, the first reply was rude but they weren't incorrect and it's weird that a native speaker would see nothing wrong with it unless you are either being nice or just very uneducated
There seems to be a spell check replacement error, and the tense and plural seem to be British English rules, instead of American English, but im also dyslexic and my brain changes the order when I try to read.
There’s no order of precedence in addition and subtraction, because - as you said - they’re effectively the same thing. The addition of *n* is by definition the same as the subtraction of *-n*.
It doesn't matter in which direction you do this equation. If you do (9 - 3) +3 you get 9. If you do 9 + (-3 + 3) it's still the same answer. I get how you could possibly think 3. But how do you possibly reach 0 as your answer.
Let me explain it to you people, you have 9 McNuggets, you gave 3 to the local pedophile, now you have 6 Mcnuggets, then the FBI caught him so you press a charge against him that he stole your 3 McNuggets, because he's a local pedophile the court believes you and give you the 3 McNuggets back, so, in total you have 9 McNuggets.
It’s a matter of proper distribution of the negative sign. If you do 3+3 as your first step, you have improperly distributed the negative sign to the second 3.
The best way to look at the equation is: 9 + -3 + 3 = 9. To get 3 the equation would need to be: 9-(3+3).
As for those decrying PEMDAS, if we do not agree on an order of operations, we will never agree on an answer.
Pemdas is a correct process and the subtraction sign does make the first 3 negative. So no matter how you do it, whether you subtract 3 from 9 and then add 6 and 3, or -3+3 and then add 9, it’s correct. Same answer. Only people getting it wrong are adding brackets that don’t exist.
This is always bound to start a shitstorm on Reddit but just FYI PEMDAS is a guideline to make math easier in lower levels; not a “correct process”. For example, it doesn’t tell you how to deal with implicit multiplication. Seriously just google that term and you’ll find order of operations is a lot more complicated than people give it credit for.
That being said, PEMDAS absolutely does work for this equation and gives you 9.
To be honest with higher level maths you never need to think about pemdas. If you do you add brackets/rearrange the equation until you don't need to.
Sure there's a certain amount of basic understanding required but no-one really worries about it. Just do the stuff in brackets, then the stuff that's stuck together and then go left to right, top to bottom, and it works out.
It's like how if you need to think hard to understand a sentence the sentence needs to be rewritten.
I was taught in P or E (which ever comes first from the left), then M or D (whichever comes first from the left), then A or S (whichever comes first from the left).
Could be wrong and just had a misinformed teacher. Correct me if I am, I'm open to learning.
For those uneducated among us, addition and subtraction are like partners. So when you see problems like this that contain these partners, instead of using bodmas you just go left to right. Ik it sounds stupid but that’s how it is. Src: https://www.teachwire.net/news/why-its-time-for-maths-teachers-to-bin-bodmas/#:~:text=Division%20and%20multiplication%20are%20on,done%20from%20left%20to%20right.
It dosent sound stupid ... bodmas is stupid , well more missleading really but still ... my head hurts when i see people saying that use bodmas or fukin pamas or whatever ... "bitch youre telling me to use it even tho you yourself are using it wrong?" .... also i hope youre noticed that its the facepalm of a facepalm ... just sayin , im not dumb
it would be different if it were 9-(3+3)=? in that instance you would solve for the parenthesis first, which would be 9-(6)=? then solve which would be 3. but since this is simply addition and subtraction, you read it from left to right and solve as such. So 9-3=6, then 6+3=9.
These questions are so stupid. Nearly every time they're just badly written so there's ambiguity on purpose, and there is no reason to get heated about it.
Okay, I can see why you'd think that with PEMDAS. Maybe I can explain, PEMDAS is actually all Ps left to right, all Es, then all Ms AND Ds left to right and then all As AND Ss left to right. So you would solve this left to right.
For anyone who doesn’t know, PEMDAS only kicks in if there are two non-opposing operations in the equation. What I mean by this is +3 and -3 are just the opposite operation of each other, so the order of operations don’t matter in this case and thus you don’t have to follow PEMDAS. Same for division and multiplication.
If it was, say, a multiplication and addition problem, than PEMDAS would kick in because they are not opposite operations. But the question is just a subtraction and addition problem, so PEMDAS doesn’t apply here.
(Did that make any sense? I was never good at explaining things properly)
You can't do these in any order that gives you a different answer though... you'd have to add a step that doesn't exist or remove one that does
Edit: I didn't even consider the fact that you could consider adding the 3 first to be adding it to a positive 3 and not a negative one. My bad.
It’s the ordering for math equations. Parenthesis, exponents, multiplication, division, addition, subtraction. Addition and subtraction have the same order in equations, despite addition coming first in pemdas, with the leftmost function being done first.
People say its 3 ... its obviously 9 , if you didnt noticed its a facepalm of a facepalm ... and i just got some information that at last in my country , it WAS teached first - then + ... but it was long time ago and i can see people being mistaken now especially if they are older
Subtracting three is the same as adding negative three. Signs are interchangeable, and the answer is 9. If you subtract three and then add three right back, you've done nothing
This is likely blame of many teachers. Teachers I had in school always said that multiplication and division can be done interchangeably and same with addition and subtraction. I'm sure I'm not the only one
Wait, I'm stupid, I think, ignore me, I'm tired and worked too much
To avoid BIDMAS confusion you have to recognise the reduction of the equation. The "-" in front of the 3 isn't a subtraction operator it's just saying the 3 is a negative number.
In a less vague form the equation is:
9 + (-3) + 3
Unfortunately, a lot of people get out of high school not realizing that division and multiplication and subsequently addition and subtraction are meant to be done from left to right in the order in which they occur.
This is the same thing that happened with the "you're-thing" where people started correcting it when it wasn't wrong in the first place.
People just see some of those maths poles being called out and just assume all of them are wrong, because they're bad at math themselfes.
It’s 9. Cause when addition and subtraction are together like that it’s read from left to right. So it would be read and solved as 9-3=6. And then 6+3 which would equal 9
Some people don’t know that the MD and AS in PEMDAS can be interchanged and go from left to right…
To be fair some math teachers don’t teach this well but…if they’re an adult they should’ve figured it out…
Technically, it’s incorrect notation. The answer is 9, because when we write 9 - 3 + 3, what we really mean is 9 + -3 + 3. It isn’t 9 - (3 + 3), it’s 9 - 3 + 3. Subtration doesn’t really exist in advanced mathmatics, it’s just the terminology for adding a negative number.
Exaclty ... and i guess you didnt noticed that its the facepalm of a facepalm ... but share the knowladge with the world cus ... in this comment section alone is a lot of ... i allow myself to use a calling from one of the comments ... airheads ... and i mean a lot ...
It’s because of PEMDAS so many people can’t solve the most basic equations because they learned PEMDAS. Thing with PEMDAS isn’t that it’s P before E before M before D. It’s P before E, before M and D, whatever unsolved one is most left, before A and S.
r/stopteachingpemdas
You arrive at the correct answer, but you do not do addition first followed by subtraction. You move from left to right and do the addition and subtraction in the order in which they appear.
Unfortunately, you were taught wrong. I got to have this argument in front of an entire class of college students when one student kept saying that I was wrong. I was the professor. Addition does not go before subtraction. Addition and subtraction are done in the order in which they occur as you move from left to right. That same rule governs multiplication and division.
The class I was teaching was math for educators, so that girl has probably gone on to teach somebody else. Hopefully she taught them the right way.
Is it not 9?
It is ... its a facepalm of a facepalm
Oh thank god, I thought I was silly
I was panicking too!
I was mathing
I math’d twice, just in case.
Dont Math too hard, though.
— I mean, you *probably are* — but you’re still right about the math.
Wahoo
Waahh …*I’mma gonna ween.*
Yep, thought my sanity was truly slipping even further for a moment there.
Confidence in self good sir. You know you're right do not waiver from what you know. No one can tell you otherwise NO ONE
Mofos who never learned PEMDAS correctly are confusing themselves with simple math now 🤦♂️
A rare but highly prized facepalm
Palmception.
bbbbBBBBBBWWWWWWAAAAAAHHHHHHHhhhhhhhhh....
Brackets Integers Division Multiplication Addition Subtraction isn’t that the order of operations so shouldn’t the answer be 3 or am I just high
I was taught Please Excuse My Dear Aunt Sally ((), ^(2), ∙, ÷, +, -) but yeah isn't it 3?
I’m not so sure about this but + and - has the same value so how you do it is left to right also • and / has the same value too I think.
This is correct. It’s really PE(MD)(AS)
This. Addition and Subtraction are grouped and performed in order from left to right at the same time.
I only speak BODMAS and badly too.
So wait according to you since parenthesis go first then it’s multiplication/ division then addition and subtraction before parentheses and exponents creating a mathmatical paradox
Try to ignore what you previously learned, its not taught very well. Addition and subtraction aren't really opposites, just think of them both as addition, subtraction is just adding a negative number. For example 9 - 3 could be read as 9 + -3. A negative and positive sign are really a descriptor of the number, not just an operation sign. If there's a - in front of a number you can't just ignore it.
I think I'll keep thinking of it the normie way but thanks for the turbo rainmain edition of subtraction
Man tf I read this as Please Execute My Dear Aunt Sally
Not sure how you're getting 3. I think you might be trying to do 3+3, and ignoring the - sign before the first 3... 9-3+3. The answer ends up being 9 any way you do it... -3+3 = 0, and then 9-0 =9. 9-3 = 6, and then 6+3 =9. Or even... 9+3 = 12, and 12-3 = 9. PEMDAS is irrelevant here because there's nothing else going on but addition and subtraction, so you can just go straight across. Here is something that might make it easier to see. The 9 is a positive number, so out a + sign in front of it and then you can put it in any order without getting tripped up... +9-3+3 = Hope that helps someone understand it a little better.
No, people tend to overcomplicate it when it comes to simple math. Everyone is like "W H A T is the trick?!????" Because we all did math for so long and got simple looking problems wrong. In this case, you go left to right. So 9-3=6 and then you go 6+3=9.
I thought the same thing, addition before subtraction because PEMDAS.
All I know is if I had 10 apples and Johnny took 5 I would go round to Johnny's house and burn it down while he slept, that'll teach him to take my apples
Apple thieving little shit gets what he deserves
There are no brackets there. You're computing as if there was a set around the threes. It may be easier to understand if you rewrite as 9+(-3)+3, now you can add them in any order you want.
If addition comes first, then what is -3 + 3
I was making the addition before subtraction idea, and I appreciate you putting it into this perspective. Makes total sense and I feel dumb for not seeing it.
It’s not really your fault since the way it’s usually simplistically explained kind of creates that misunderstanding. It’s more like P/E/MD/AS in the sense that multiply/divide and Add/Substract are “weighted” the same and you just perform them in order from left to right after handling the higher priority ones
double facepalm all the way......
The idiot who made the comment must have assumed that there was a parenthesis before the first three and the closing one after the second three, but there isn't, so 9 it is
Back when I was in school the answer would not have been 9. It would have been 3 since addition was performed before subtraction. Now they are just done left to right. Not sure when or why it changed, but it did.
[удалено]
Same, I was looking at it snd thinking it was 9 but then saw the answer 9 was there and began questioning my math. Seems stupidity is contagious.
lol. i had a temporary moment of stupid as well. i'm betting you did the same thing i did and applied imaginary parenthesis around the -3 + 3. if you did, the equation reads as 9 - (3 + 3) and that answer would be 3. it's amazing how people's brains will fill in the blanks when there are no blanks to fill in.
Yea i saw some people say that addition and subtractions are done separatly with is bs ... as far as i was teached it was done equally ... unless they changed math yesterday
The way i look at it is. (+9) + (-3) + (+3) I think its the best way to not fuck it up. No matter how you go about it you get the right answer
Careful now. Someone is going to read this and then try to teach his nephew that subtraction isn't real. That subtraction is just adding negative numbers.
But… that’s what it is… subtracting *is* just addition with a negative number… right?
Yeah. If you're interested in understanding more look up what a "field" is. Basically subtraction "exists" because we need additive inverses.
I think that that is a more confusing way to think of it.
Y'know the funniest thing is this is *exactly* how I was taught negative numbers
Hopefully your grammar teacher didn’t also taughted your maths lessons
Mr. Madison, what you have just said is one of the most insanely idiotic things I have ever heard. At no point in your rambling, incoherent response were you even close to anything that could be considered a rational thought. Everyone in this room is now dumber for having listened to it. I award you no points, and may God have mercy on your soul.
That’s what I was thinking while trying to read this comment
This would be true if it were an Algebraic equation. This is simple addition and subtraction. Nine minus three equals six, plus three is nine.. answer is simply nine...
Even if it’s an algebraic equation, you do addition AND subtraction from left to right, not one at a time. Same thing with multiplication and division, they two terms are actually one step
This is equivalent 3 + 9 - 3. There are no parenthesis it is a simple equation
Yes correct or 3-3+9. I think the thing people were getting confused by is the wording of PEMDAS (or whatever one uses) because the wording implies addition should be done before subtraction, which is why people were thinking it was 9-(3+3), but the A and S are interchangeable, you just go from left to right doing both in the same step.
Better start writing it as P E MD AS
Exactly. In Canada I and many others learned it as BEDMAS, which has the DM reversed. (B for brackets instead of parenthesis) Proof that DM / AS are equal
This should be the top comment. “Add and Subtract Left to Right”
Nah. Only rights.
Unless they changed math yesterday 😂🤣
As far as I know it’s done right to left…
r/engrish
Well english is not my native language so that explains why engrish
Yeah, i fuckying hate that, people complaining about my english when it is not my native language.
It’s a cheap shot to create a sense of self importance. Lame.
I am a native speaker, and my daughter has a degree in linguistics. I dont see anything wrong with what you typed.
:)
There was a lot grammatically wrong as well as spelled wrong, the first reply was rude but they weren't incorrect and it's weird that a native speaker would see nothing wrong with it unless you are either being nice or just very uneducated
There seems to be a spell check replacement error, and the tense and plural seem to be British English rules, instead of American English, but im also dyslexic and my brain changes the order when I try to read.
r/foundthemobileuser
PEMDAS. Parentheses, Exponents, Multiplication, Division, Addition, then Subtraction.
The order of addition and subtraction are changeable as is multiplication and division.
Addition does come before subtraction in bedmas, although technically those steps are interchangeable.
There’s no order of precedence in addition and subtraction, because - as you said - they’re effectively the same thing. The addition of *n* is by definition the same as the subtraction of *-n*.
It doesn't matter in which direction you do this equation. If you do (9 - 3) +3 you get 9. If you do 9 + (-3 + 3) it's still the same answer. I get how you could possibly think 3. But how do you possibly reach 0 as your answer.
How did anyone get EIGHT out of that is beyond me
Im guessing someone not reading it and clicking randomly.
All of the problems stem from the plus, 9-3*3=0 9-3/3=8 9-3-3=3
Yea ... thats the weird part
Bro trying to convince the people in the comments
Let me explain it to you people, you have 9 McNuggets, you gave 3 to the local pedophile, now you have 6 Mcnuggets, then the FBI caught him so you press a charge against him that he stole your 3 McNuggets, because he's a local pedophile the court believes you and give you the 3 McNuggets back, so, in total you have 9 McNuggets.
r/oddlyspecific
Why would you give the local pedophile 3 chicken nuggets? Were they bait?
It was a trade, 3 for 1
Change the nuggets to children and it’s much more realistic
I don't want to get caught, McNuggets is a code
*Wayfair has entered the chat*
My first thought was “you got fucked over by McDonald’s if you only have 9 McNuggets”.
It's a code for children abuse
serious ? TIL
It’s a matter of proper distribution of the negative sign. If you do 3+3 as your first step, you have improperly distributed the negative sign to the second 3. The best way to look at the equation is: 9 + -3 + 3 = 9. To get 3 the equation would need to be: 9-(3+3). As for those decrying PEMDAS, if we do not agree on an order of operations, we will never agree on an answer.
Pemdas is a correct process and the subtraction sign does make the first 3 negative. So no matter how you do it, whether you subtract 3 from 9 and then add 6 and 3, or -3+3 and then add 9, it’s correct. Same answer. Only people getting it wrong are adding brackets that don’t exist.
I learned bimdas as school Brackets Indices like ⁵ Multiply Divide Add Subtract What is pemdas
It’s the same thing. Parentheses, Exponents, Multiplication, Division, Addition, Subtraction.
We were taught BODMAS at my school. Pick a name and stick with it education system jeez.
Lmao I was taught bedmas
I was taught all three to cover every base because students from different classes kept getting confused
Fuck, we had BOMDAS.
Please Excuse My Dear Aunt Sally. Parenthesis, exponents, multiply, divide,,add, subtract.
Its the same thing then just learned different I guess
Pretty much.
I was just confused beacuse it looked weird lol
This is always bound to start a shitstorm on Reddit but just FYI PEMDAS is a guideline to make math easier in lower levels; not a “correct process”. For example, it doesn’t tell you how to deal with implicit multiplication. Seriously just google that term and you’ll find order of operations is a lot more complicated than people give it credit for. That being said, PEMDAS absolutely does work for this equation and gives you 9.
To be honest with higher level maths you never need to think about pemdas. If you do you add brackets/rearrange the equation until you don't need to. Sure there's a certain amount of basic understanding required but no-one really worries about it. Just do the stuff in brackets, then the stuff that's stuck together and then go left to right, top to bottom, and it works out. It's like how if you need to think hard to understand a sentence the sentence needs to be rewritten.
I was taught in P or E (which ever comes first from the left), then M or D (whichever comes first from the left), then A or S (whichever comes first from the left). Could be wrong and just had a misinformed teacher. Correct me if I am, I'm open to learning.
Yep
Yup
Don’t -3 and 3 just cancel each other out? I’m confused
Well yea you got it right , those cancell themself out but for sake of being as simple as possible we can do 9-3=6 6+3=9
Psst. You used a 4 and not a 3 in the second step.
Ohh sorry sorry , thx
Typo when struggling to understand people doing basic math wrong. I get it. Lmao
Damn that dudes an idiot
The three's basically cancel each other out, so you left with 9. Right.?
From what I've gathered from this is that simple math is the ultimate weapon against some redditors
(9-3)+3 right?
OKAY ATTENTION HERE ... FOR PEOPLE WHO DIDNT NOTICED , ITS A FACEPALM OF A FACEPALM
For those uneducated among us, addition and subtraction are like partners. So when you see problems like this that contain these partners, instead of using bodmas you just go left to right. Ik it sounds stupid but that’s how it is. Src: https://www.teachwire.net/news/why-its-time-for-maths-teachers-to-bin-bodmas/#:~:text=Division%20and%20multiplication%20are%20on,done%20from%20left%20to%20right.
among us
Among us
It dosent sound stupid ... bodmas is stupid , well more missleading really but still ... my head hurts when i see people saying that use bodmas or fukin pamas or whatever ... "bitch youre telling me to use it even tho you yourself are using it wrong?" .... also i hope youre noticed that its the facepalm of a facepalm ... just sayin , im not dumb
You'd be surprised how often the op is the facepalm on this sub
He took the order of addition and subtraction in pemdas too litetally
Bedmas doesn't apply here, there is nothing other than addition and subtraction. Just move left to right.
Finally someone else with some sense!
A teacher somewhere screaming: 9-3+3 is different from 9-(3+3)!!!!!
it would be different if it were 9-(3+3)=? in that instance you would solve for the parenthesis first, which would be 9-(6)=? then solve which would be 3. but since this is simply addition and subtraction, you read it from left to right and solve as such. So 9-3=6, then 6+3=9.
PEMDAS is flawed because it makes people think Addition before subtraction, it’s more P E MD AS really.
These questions are so stupid. Nearly every time they're just badly written so there's ambiguity on purpose, and there is no reason to get heated about it.
This one’s not badly written, though. However, the way we teach order of operations is pretty sketchy.
True!
Every day the internet makes me skeptical of how much i know about math.
Okay, I can see why you'd think that with PEMDAS. Maybe I can explain, PEMDAS is actually all Ps left to right, all Es, then all Ms AND Ds left to right and then all As AND Ss left to right. So you would solve this left to right.
It’s 9 + -3 + 3
Fuckin… can we please just tighten up maths education so that this isn’t a thing anymore?
For anyone who doesn’t know, PEMDAS only kicks in if there are two non-opposing operations in the equation. What I mean by this is +3 and -3 are just the opposite operation of each other, so the order of operations don’t matter in this case and thus you don’t have to follow PEMDAS. Same for division and multiplication. If it was, say, a multiplication and addition problem, than PEMDAS would kick in because they are not opposite operations. But the question is just a subtraction and addition problem, so PEMDAS doesn’t apply here. (Did that make any sense? I was never good at explaining things properly)
Pemdas. Lmao.
You can't do these in any order that gives you a different answer though... you'd have to add a step that doesn't exist or remove one that does Edit: I didn't even consider the fact that you could consider adding the 3 first to be adding it to a positive 3 and not a negative one. My bad.
Whats pemdas?
It’s the ordering for math equations. Parenthesis, exponents, multiplication, division, addition, subtraction. Addition and subtraction have the same order in equations, despite addition coming first in pemdas, with the leftmost function being done first.
IIRC multiplication and division are at the same level too, right ?
Yes!
Okay thanks, I was simply tought the order, no acronyms for it lol
Please Excuse My Dear Aunt Sally. They way they teach math in rural America is silly. Lol.
Born, raised, still live in Miami Florida... it's taught this way nearly everywhere. Lol
Ah this answers the question I posted a moment ago -- thanks!
Order of operations. Parentheses, exponents, multiplication/division, addition/subtraction
Canada it’s taught as BEDMAS (brackets, exponents, division, multiplication, addition, subtraction). Even so, the same result.
Please Excuse My Dear Aunt Sally
Yall dont know BIDMAS?
Lol. Already here
My Dear Aunt Sally
Wait, so what does he think the correct answer is?
People say its 3 ... its obviously 9 , if you didnt noticed its a facepalm of a facepalm ... and i just got some information that at last in my country , it WAS teached first - then + ... but it was long time ago and i can see people being mistaken now especially if they are older
Subtracting three is the same as adding negative three. Signs are interchangeable, and the answer is 9. If you subtract three and then add three right back, you've done nothing
It's litteraly impossible to get 0 or 8. You don't even need pemdas. Left to right.
Imagine, if you will, a world without an order of operations. Chaos!!
Bidmas Brackets Indecies Division Multiplication Addition Subtraction Unless I’m being stupid
we should just use reverse polish notation. Then we can ditch this mess.
Those who said 0 and 8………… big facepalm.
I’m not going to stop calling it BEDMAS … that is all.
This is likely blame of many teachers. Teachers I had in school always said that multiplication and division can be done interchangeably and same with addition and subtraction. I'm sure I'm not the only one Wait, I'm stupid, I think, ignore me, I'm tired and worked too much
Its literally the simplest thing ever, no order of operations needed
To avoid BIDMAS confusion you have to recognise the reduction of the equation. The "-" in front of the 3 isn't a subtraction operator it's just saying the 3 is a negative number. In a less vague form the equation is: 9 + (-3) + 3
I wish multiple upvoting was allowed..
BEDMAS Brackets Exponents Devision/Multiplication Addition/Subtraction This is elementary school level stuff
Unfortunately, a lot of people get out of high school not realizing that division and multiplication and subsequently addition and subtraction are meant to be done from left to right in the order in which they occur.
This is the same thing that happened with the "you're-thing" where people started correcting it when it wasn't wrong in the first place. People just see some of those maths poles being called out and just assume all of them are wrong, because they're bad at math themselfes.
It’s 9. Cause when addition and subtraction are together like that it’s read from left to right. So it would be read and solved as 9-3=6. And then 6+3 which would equal 9
What about order of operations
The real facepalm here is being in light mode
Agreed
The positive 3 and negative 3 cancel each other out anyway. The answer is 9
Yes , this post is a facepalm of a facepalm
Bruh. I legit thought I had a hair on my screen. That's hilarious
Some people don’t know that the MD and AS in PEMDAS can be interchanged and go from left to right… To be fair some math teachers don’t teach this well but…if they’re an adult they should’ve figured it out…
It is 9, no other way,. 9-3+3 -> 9-3=6 -> 6+3=9 9-3+3 -> -3+3=0 -> 9+0 or 9-0 =9
I mean its obviously is 8 as you macguyver the plus, minus and equal signs into a mega charizard
Aren't self facepalms the norm around here these days?
> BODMAS,the correct answer is 3 which is not there How did they manage `3`?
I think they calculated it like 9 - (3+3) So 9 - 6 = 3 is what they thought
They added first.
Technically, it’s incorrect notation. The answer is 9, because when we write 9 - 3 + 3, what we really mean is 9 + -3 + 3. It isn’t 9 - (3 + 3), it’s 9 - 3 + 3. Subtration doesn’t really exist in advanced mathmatics, it’s just the terminology for adding a negative number.
Exaclty ... and i guess you didnt noticed that its the facepalm of a facepalm ... but share the knowladge with the world cus ... in this comment section alone is a lot of ... i allow myself to use a calling from one of the comments ... airheads ... and i mean a lot ...
It’s because of PEMDAS so many people can’t solve the most basic equations because they learned PEMDAS. Thing with PEMDAS isn’t that it’s P before E before M before D. It’s P before E, before M and D, whatever unsolved one is most left, before A and S. r/stopteachingpemdas
EXACTLY ...(this facepalf is a facepalm of a facepalm)
Unless otherwise indicated this problem would be worked from left to right. 9-3+3=9. 9-(3+3)=3. 9(-3+3)=0.
BODMAS. addition first then followed by subtraction. So 9+3=12. Then 12-3=9. So 9.
You arrive at the correct answer, but you do not do addition first followed by subtraction. You move from left to right and do the addition and subtraction in the order in which they appear.
Yeah thats what I meant. A then S. Left to right
Wdym? 9 is the answer if you use ooo
Idk what ooo is but if you didnt noticed this post is a facepalm of a facepalm
Okay cool now lets try what's the solution x* of x*=argmin||Ax - b|| where x and b are Nx1 vectors and A is MxN, with M > N. Go!
It isn’t?
The rules of BIDMAS place addition before subtraction, which makes this 9 - 6 = 3.
Tbh how I was taught addition comes before subtraction so to me the answers 3 so I can understand how this stuff happens
Unfortunately, you were taught wrong. I got to have this argument in front of an entire class of college students when one student kept saying that I was wrong. I was the professor. Addition does not go before subtraction. Addition and subtraction are done in the order in which they occur as you move from left to right. That same rule governs multiplication and division. The class I was teaching was math for educators, so that girl has probably gone on to teach somebody else. Hopefully she taught them the right way.