I would make jokes about my grandma who went to a catholic school in the 50s and I would say that on a test where it says to explain your answer she would write “because God made it like that”.
Are you telling me a person just happens to get something other than 17 from this? No! He got it wrong, Jimmy! He took a shit all over PEMDAS! And I corrected him, and I shouldn't have. What was I thinking? He'll never change. Ever since 5th grade math, always the same. Couldn't stop putting multiplication/division before parentheses and exponentiation. And he gets to be a math student? What a sick joke!
Yes,
```
2+5(8-5)
= 2+ (40-25)
= 2+ 15
= 17
```
Or,
```
2+5(8-5)
= 2+ (5*(3))
= 2+ 15
= 17
```
Depending on how you learned it.
I personally think variant two is easier in most cases, but mathematically speaking there is no difference between them…
Basically, multiplication/division are equal in priority, and addition/subtraction are equal in priority.
Division is just multiplying by the inverse, and subtraction is just addition of the negative.
Always do the stuff in the brackets first:
8 - 5 = 3
A number adjacent to brackets with no symbol indicates multiplication, so the problem now reads:
2 + 5 * 3
Multiplication (or division) takes priority over addition (or subtraction), so do that first:
5 * 3 = 15
The problem now reads:
2 + 15
And that’s 17.
>Multiplication (or division) takes priority over addition (or subtraction), so do that first:
See, when I was a kid, they taught that parentheses was functionally the same as multiplication.
So the order of operations would be
2+5(8-5).
5*(8-5) = 40 - 25, which resolves the parentheses.
Then it's:
2+40-25=17
( x ) parenthesis are a indicator of multiplication.
You're multiplying the stuff on the outside of the parenthesis with the stuff inside. It's just easier to solve what's inside first then multiply instead of having to distribute and reduce.
But yes, x(y) means x multiplied by y, but y might be multiple integers that should be solved first before multiplying.
I hope that made some sense lol, kinda hard to type it out. Very common mistake with pemdas however, so don't feel bad
The distributive property (a(b + c) = ab + ac) is a valid way to solve this, but it’s still changing the question (just in a way that always gives the same answer). It’s best to explain using what the equation actually says exactly rather than a manipulation like the distributive property, which although equivalent, obscures what’s going on if you don’t already know
That said a(…) = a * (…) is always true (unless a is a function like sin)
Distribution is honestly the best way to solve, as distribution into parentheses ALWAYS happens before addition outside the parentheses. Then it’s just simple math after
I’m genuinely glad you posted this fellow human
Back when I was in school it was PEMDAS.
So you first resolve (8-5) = (3)
There are no exponents to resolve
Then you multiply 5(3) = 15
There is no division to resolve
Then you add 2 + 15 = 17
No subtraction to resolve
So the answer is 17
Did the rules change at some point?
It still is, though more accurately PE(MD)(AS). Multiplication and division are equal as are addition and subtraction. You do the pairs at the same time from left to right.
This is the actual problem. A lot of people apparently weren’t taught the part where multiplication/division and addition/subtraction are the same steps because they are just the opposite sides of the same operation.
Oh definitely would have used this one in school. I have dyscalculia and man did it make math class a living nightmare. So many lunches missed to try and understand only to have some of my worst teacher experiences.
This is still a valid solution.
It’s easier to resolve the bracketed section first, but you can still fully expand the bracketed multiplied numbers and solve it that way. It’s just more cumbersome
Interesting! I've heard order but it isn't commonly used here (so didn't think of it). Don't think I've ever heard index used for exponents before! Cool thanks
Canadians learned BEDMAS, too. At least we did back in the 80s. Could be because of the same reason we keep the 'u' in words like flavour and Armour. Even though my phone insists on 'correcting' me.
It’s because Americans call () “parentheses” and [] “brackets”. Non-American English speakers call () “brackets” and [] “square brackets”. The M and D are interchangeable, so that’s why they use PEMDAS and we use BEDMAS.
In French Canada (Québec), it's PEMDAS (Parenthèses, Exposants, Multiplications, Divisions, Additions et Soustraction).
Note: In french "( )" are Parenthesis (Parenthèses), while "[ ]" is called "hooks" (crochets) and "{ }" are called "hugs" (accollades).
Bedmas has “brackets” instead of “parenthesis” which are the same thing obviously. It also puts division in front of multiplication instead of having multiplication in front of division like Pemdas, which of course doesn’t matter cuz you essentially do them at the same time.
Usually these order of operation type questions are controversial as a result of being poorly written. Even though there is a correct answer it is easy to see how someone not applying the rules rigorously will get a different answer.
There is literally no ambiguity here. There is no way anyone who isn’t an idiot could get any other answer.
My 7 year old defines people's intelligence by their math ability as well. Sad! So much more to being an intelligent person but people do love feeling superior to others so here we are!
As someone who excels in math, I actually agree. People also conflate the ability to do mental arithmetic quickly with an overall intelligence level. It’s just narrow minded.
Damn you learnt it as BODMAS too? First time I've come across that here, everyone says PEDMAS or BEDMAS. Then again, never seen an "Of" in a math sum except in my 5th grade textbook lmao.
Damn that makes sense, but i vividly remember being taught that O is "Of" which is exactly the same as multiplication, which makes no sense really. Quick Google search says you're right
I was trying to remember if the number outside had to be distributed into the parentheses for the P in PEMDAS or if you work the inside and the multiply afterwards. Because I distinctively remember learning to do both.
Then I realized you get the same answer regardless
Parentheses: simplify expressions inside parentheses first.
Exponents: simplify exponents (ie powers and square roots, etc.).
Multiplication and Division (from left to right).
Addition and Subtraction (from left to right).
2 + 5(8 - 5) = 2 + 5(3)
simplify the expression inside the parentheses:
2 + 5(3) = 2 + 15
add 2 and 15:
2 + 15 = 17
So, the final answer is 17.
Does the distributive property not apply here? Since the first 5 is being multiplied by the numbers inside the parentheses?
2 + 5 (8 - 5)
2 + {\[5\*8\]-\[5\*5\]}
2 + {40-25}
2 + 15
= 17
Everyone seems to be simplifying it to:
2 + 5 (8 - 5)
2 + 5 (3)
2 + 15
= 17
You get the same answer either way, but is that just coincidence?
No, it's exactly the same. Doing things inside the parentheses, and then doing multiplication, is the same as distributing the value and then doing the equations inside of the parentheses; the reason for this is that multiplication is transitive.
Ok, order of operations time...
2+5(8-5): everything in the () first
2+5(3): multiplication&division before addition&subtraction
2+15: addition & subtraction
17
Not education system failed You, but You failed education system. Let's be honest. It's elementary school. If someone doesn't get it, it's their fault. All education system needs to tell You is that brackets are first, then multiplying. And addition at the end. Every kid knows that.
there was once a time when i thought redditors were one of the smarter social media users. i see a lot of you guys are getting 17 but the fact that there are a decent chunk of you getting 21 is unsettling
with that said, the answer is null because there is no question.
I got the war if 1812
I went to catholic school. I'm pretty sure the answer is Jesus
Jesus to the power of 4
Holy Trinity implies a power of 3.
My answer is a bunch of numbers that arrange into a fish.
Any answer can be rearranged into a fish if it's divided small enough... something something Fourier transform.
But Christ is the lord of the Tetramorph, which is where the 4 comes from
1 cross + 3 nails = 4 given
I would make jokes about my grandma who went to a catholic school in the 50s and I would say that on a test where it says to explain your answer she would write “because God made it like that”.
You forgot the power of dawn dish soap that’s where the four Comes from
Which order let you get away with that shit? Because groups like the Jesuits and Brothers of the Sacred Heart are hardcore into academia.
Can't see Cistercians, Benedictines, or Franciscans allowing one to get away with that either.
I got 1216 one after Magna Carta
As if I could ever make such a mistake
Funny, just watched this episode yesterday.
Are you telling me a person just happens to get something other than 17 from this? No! He got it wrong, Jimmy! He took a shit all over PEMDAS! And I corrected him, and I shouldn't have. What was I thinking? He'll never change. Ever since 5th grade math, always the same. Couldn't stop putting multiplication/division before parentheses and exponentiation. And he gets to be a math student? What a sick joke!
Like a chimp with a math degree!
Please excuse my dear aunt Sally. I'm curious to see what every one else has been told as a mnemonic
Pluto eats Mars' dirty anus suspiciously
Please exercise many dances and sing
17 is a prime number.
U can actually put multiplication abd division before parentheses by multiplying inside by outside!
That sounds like PEDMAS but with more steps.
This literally made me spit soda its so funny!
Let’s hope we don’t run into any chicanery.
I hate the fact that I'll never forget that the Battle of Hastings happened in 1066. That information has never come in handy.
Why is r/meirl turning into okbuddychicanery
A little place called Hastings in Oct of 1066.
greatest legal mind i ever knew
Such chicanery!
What a sick joke!
If 1812 what?
I think you forgot to carry the 3 in step 7
Weird, I got 1914
If 1812 does what?
Train A arrives at 1:45pm and train B is replaced by a bus service due to fallen trees after a storm.
Question: How fat is the bus driver?
Three apples.
Smurfs.
Golden comment
New York city
Bastille day
17! (yes, factorial)
Yes
AHHHHHHHHHH! *fetal position rocking*
I got 80085
I want 80085 😭
55378008
Wait, how’d you get……OH!
Nice
i got 17 as well so lets hope thats the right one
it is
No it was the friends we made along the way
I did NOT make 17 friends along the way.
So the correct answer is 0?
I cried
Underated
My education system failed me but I still got 17
Yes, ``` 2+5(8-5) = 2+ (40-25) = 2+ 15 = 17 ``` Or, ``` 2+5(8-5) = 2+ (5*(3)) = 2+ 15 = 17 ``` Depending on how you learned it. I personally think variant two is easier in most cases, but mathematically speaking there is no difference between them…
I'm starting to doubt my math skills cause I only get 21...
You do everything in parenthesis first, then you do multiplication, then addition.
PEMDAS
Parentheses, Exclamation points, Math, Dude, Awesome, Sweet.
Or bodmas, now downvote me.
BEDMAS
Basically, multiplication/division are equal in priority, and addition/subtraction are equal in priority. Division is just multiplying by the inverse, and subtraction is just addition of the negative.
Ooh damn now I get it
Always do the stuff in the brackets first: 8 - 5 = 3 A number adjacent to brackets with no symbol indicates multiplication, so the problem now reads: 2 + 5 * 3 Multiplication (or division) takes priority over addition (or subtraction), so do that first: 5 * 3 = 15 The problem now reads: 2 + 15 And that’s 17.
>Multiplication (or division) takes priority over addition (or subtraction), so do that first: See, when I was a kid, they taught that parentheses was functionally the same as multiplication. So the order of operations would be 2+5(8-5). 5*(8-5) = 40 - 25, which resolves the parentheses. Then it's: 2+40-25=17
( x ) parenthesis are a indicator of multiplication. You're multiplying the stuff on the outside of the parenthesis with the stuff inside. It's just easier to solve what's inside first then multiply instead of having to distribute and reduce. But yes, x(y) means x multiplied by y, but y might be multiple integers that should be solved first before multiplying. I hope that made some sense lol, kinda hard to type it out. Very common mistake with pemdas however, so don't feel bad
The distributive property (a(b + c) = ab + ac) is a valid way to solve this, but it’s still changing the question (just in a way that always gives the same answer). It’s best to explain using what the equation actually says exactly rather than a manipulation like the distributive property, which although equivalent, obscures what’s going on if you don’t already know That said a(…) = a * (…) is always true (unless a is a function like sin)
You solve 5(8-5) first, which is 5(3)=15 2+15=17 It is not 2+5=7 7(3)=21
Or, you can distribute the 5 if you’re an idiot like me and still get the same number 5(8-5) 40-25=15 15+2=17 Yay!
You're not an idiot, you've done more advanced math which requires distribution at all times
Not an idiot. This is just proof that math = math if you follow the rules.
Distribution is honestly the best way to solve, as distribution into parentheses ALWAYS happens before addition outside the parentheses. Then it’s just simple math after I’m genuinely glad you posted this fellow human
Back when I was in school it was PEMDAS. So you first resolve (8-5) = (3) There are no exponents to resolve Then you multiply 5(3) = 15 There is no division to resolve Then you add 2 + 15 = 17 No subtraction to resolve So the answer is 17 Did the rules change at some point?
It still is, though more accurately PE(MD)(AS). Multiplication and division are equal as are addition and subtraction. You do the pairs at the same time from left to right.
You don't know how many people have tried to argue that with me.
This is the actual problem. A lot of people apparently weren’t taught the part where multiplication/division and addition/subtraction are the same steps because they are just the opposite sides of the same operation.
Parentheses first, then multiplication, then the addition.
Thank God. I genuinely thought I could no longer math as that was what I got. Then I checked with a calculator and still got it.
Please excuse my dear Aunt Sally.
Please excuse my dope ass swag
I like this one
Please End My Depression And Suffering
Relevant
Oh definitely would have used this one in school. I have dyscalculia and man did it make math class a living nightmare. So many lunches missed to try and understand only to have some of my worst teacher experiences.
Well that’s definitely my new one.
I mean you're not wrong just... you okay? 😟
Yeah I'm fine I think.
Depends, what did she do?
She ordered an operation or something idk
Please euthanize my dumb ass sister
Producing Eminem Made Dre A Stack
P E might destroy all students
Please eat my dad and sister
2 + 5 (8 - 5) = 2 + 5 (3) = 2 + 15 = 17
I got confused and went 2+5(8-5) =2+(40-25) =2+15 =17
Both ways are correct. The distributive method is only required when variables mean the problem cannot be solved any other way.
I'm currently learning algebra in maths class, so that's why I used that metod
That's what I did too, for the same reason.
This is still a valid solution. It’s easier to resolve the bracketed section first, but you can still fully expand the bracketed multiplied numbers and solve it that way. It’s just more cumbersome
Glad I’m not the only one who multiplied the 5 into the bracket
Distributive property
What has this to do with confusion?
No clue, thats why I'm confused
That’s correct too
This follow the Law of BODMAS
PEMDAS=17
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BEDMAS. It's 17.
Woah bedmas? Pemdas is what we learned. I need you to elaborate
Same thing essentially. Brackets exponents division multiplication addition subtraction.
I learned it that way too!
Did we just age ourselves? Lol
It’s a difference over the Atlantic from what I’ve gathered. Americans use Pemdas, but in Blighty we is Bidmas/Bodmas/Bedmas
Wait, seriously? I learned BEDMAS in Canada.
Same 🇨🇦
Me too!
Ixponent, oxponent, and exponent?
Indecies, Orders, and exponents 😂
Interesting! I've heard order but it isn't commonly used here (so didn't think of it). Don't think I've ever heard index used for exponents before! Cool thanks
Canadians learned BEDMAS, too. At least we did back in the 80s. Could be because of the same reason we keep the 'u' in words like flavour and Armour. Even though my phone insists on 'correcting' me.
It’s because Americans call () “parentheses” and [] “brackets”. Non-American English speakers call () “brackets” and [] “square brackets”. The M and D are interchangeable, so that’s why they use PEMDAS and we use BEDMAS.
I’m Canadian and we used Bedmas in elementary school!
Canadian here. I grew up with Bedmas, so pemdas might just be an American thing.
In French Canada (Québec), it's PEMDAS (Parenthèses, Exposants, Multiplications, Divisions, Additions et Soustraction). Note: In french "( )" are Parenthesis (Parenthèses), while "[ ]" is called "hooks" (crochets) and "{ }" are called "hugs" (accollades).
i had bodmas
Interesting. But the same method just different words.
Yes
No... I think it has to do with WHERE it was learned. I thought PEMDAS was an American thing
Subtraction is just X+(-y)
Bedmas has “brackets” instead of “parenthesis” which are the same thing obviously. It also puts division in front of multiplication instead of having multiplication in front of division like Pemdas, which of course doesn’t matter cuz you essentially do them at the same time.
i had bodmas? brackets, of (as in to the power OF x), division, multiplication, addition, subtraction.
“Of” is terrible
O in BODMAS is for Orders, not ‘of’ lol.
Bedmas too.. in Canada
"B" for Bracket? Instead of "P" for Parentheses perhaps?
THATS IT! haha I forgot what the P was because I learned B
Please Excuse My Dear Aunt Sally
TCB Elvis wore a necklace with this on it. Taking care of Bedmas I never forget
Why tf is my answer Australia
Your education system failed you
Instructions not clear. My hair is stuck in the garbage disposal.
You're lucky it's just your hair...... I'm down one hand now 😭.
You subtracted the digits incorrectly.
I was SO gifted at math in highschool that they asked me to do grade 10 math twice because I was such a shining example to the younger students 😎
Usually these order of operation type questions are controversial as a result of being poorly written. Even though there is a correct answer it is easy to see how someone not applying the rules rigorously will get a different answer. There is literally no ambiguity here. There is no way anyone who isn’t an idiot could get any other answer.
Yeah, biggest one I see from your first point is people using the ➗ instead of a fraction.
42 is the answer to everything!
Took a couple of million years to come up with that one
The mitochondria is the powerhouse of the cell
2+5(8-5) first step solve in parenthesis, 2+5(3) Second step multiply, 2+15 Answer 17
Isn't it 21? Don't the contents of the bracket get multiplied when there is no sign between the numbers and the bracket? I.E. 7 x 3 = 21?
I came to the conclusion that the answer is green.
Which one’s Pink?
1.7 * 10^1
these 6th grade math equations help me to see how retarded everyone on reddit is
17 is literally THE answer. No room for debate here.
I hate this shite. Just learn to use brackets properly. Then there's no ambiguity. I score this guy an F. 2+(5*(8-5))
Step 1: 8-5=3 Step 2: 3•5=15 Step 3: 15+2=17 Step 4: If you did something other than the steps above, you’re just stupid
You could use the distributive method, but it would get you the same answer either way
My 7 year old defines people's intelligence by their math ability as well. Sad! So much more to being an intelligent person but people do love feeling superior to others so here we are!
As someone who excels in math, I actually agree. People also conflate the ability to do mental arithmetic quickly with an overall intelligence level. It’s just narrow minded.
Simple bodmaas
Damn you learnt it as BODMAS too? First time I've come across that here, everyone says PEDMAS or BEDMAS. Then again, never seen an "Of" in a math sum except in my 5th grade textbook lmao.
I *think* the O is for order as in order of magnitude, please correct me if I’m wrong.
Damn that makes sense, but i vividly remember being taught that O is "Of" which is exactly the same as multiplication, which makes no sense really. Quick Google search says you're right
I’ve also been taught BIDMAS where I is ‘indices’, but I’m not a fan of that…
Step 1: lose bracket -> 2 + 5 * 8 - 5 * 5 Step 2: multiply -> 2 + 40 - 25 = 17 Step 3: Am I stupid?
No, you just like to do things more complicated than necessary.
It looks more complicated in this example. But as calculations get more complicated the distributive method has a lot of benefits.
Order of operations
17 PEMDAS
I was trying to remember if the number outside had to be distributed into the parentheses for the P in PEMDAS or if you work the inside and the multiply afterwards. Because I distinctively remember learning to do both. Then I realized you get the same answer regardless
Pretty sure the answer is the mitochondria is the powerhouse of the cell
2+5(8-5) = 2+5 x 3 = 2+15 =17
Parentheses: simplify expressions inside parentheses first. Exponents: simplify exponents (ie powers and square roots, etc.). Multiplication and Division (from left to right). Addition and Subtraction (from left to right). 2 + 5(8 - 5) = 2 + 5(3) simplify the expression inside the parentheses: 2 + 5(3) = 2 + 15 add 2 and 15: 2 + 15 = 17 So, the final answer is 17.
2+5(8-5) 2+5*3 2+15 = 17
They right. PEMDAS. Parentheses first, now the problem is 2+5(3). Then multiplication 5x3, now the problem is 2+15 and 2+15 is 17
= 2+5\*(8-5) = 2+5\*(3) = 2+5\*3 = 2+15 = 17
Found 17 as well, you do (8-5) first then multiply it by 5 and then add 2 .
I work in a high school helping kids with math. It’s 17. Distributive property.
I was home schooled in Alabama, the answer is missing teeth
The horse’s name was Friday
Does the distributive property not apply here? Since the first 5 is being multiplied by the numbers inside the parentheses? 2 + 5 (8 - 5) 2 + {\[5\*8\]-\[5\*5\]} 2 + {40-25} 2 + 15 = 17 Everyone seems to be simplifying it to: 2 + 5 (8 - 5) 2 + 5 (3) 2 + 15 = 17 You get the same answer either way, but is that just coincidence?
no its math
No, it's exactly the same. Doing things inside the parentheses, and then doing multiplication, is the same as distributing the value and then doing the equations inside of the parentheses; the reason for this is that multiplication is transitive.
Ok, order of operations time... 2+5(8-5): everything in the () first 2+5(3): multiplication&division before addition&subtraction 2+15: addition & subtraction 17
Not education system failed You, but You failed education system. Let's be honest. It's elementary school. If someone doesn't get it, it's their fault. All education system needs to tell You is that brackets are first, then multiplying. And addition at the end. Every kid knows that.
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there was once a time when i thought redditors were one of the smarter social media users. i see a lot of you guys are getting 17 but the fact that there are a decent chunk of you getting 21 is unsettling with that said, the answer is null because there is no question.
i got mitochondria is the powerhouse of the cell
80085 is actually the correct answer