this post was submitted on 13 May 2026
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Well, Patrick IS an idiot ... so it checks out?
I hate math, my teacher taught is as first in last out and to this day I still get confused. The answer is 9 right?
Yes, at least by the most common agreed on convention. Almost any mathematician, programming language, search engine or spreadsheet software will say it's 9. It is for all intents and purposes the right answer.
There is no right answer. It just depends on convention. It's like color vs colour, neither has been shouted down from the heavens to be the only way to write something, it depends on culture.
There very much is an agreed on convention, some people are just not using it and that is entirely their problem.
It is one though, you gotta do multiplication first
No. After you do the parentheses, multiplication and division are done left to right.
Yeah, gonna need to see a proof before I trust ANYONE on lemmy
https://en.wikipedia.org/wiki/Order_of_operations#Conventional_order
Multiplication and division are the same operation
6 * (1 / 2) = 6 / 2
Multiplication/division and addition/subtraction both happen left to right. They... Didn't teach you that in school?
It can be both depending on how you handle operator precendence.
PEMDAS definitely doesn't result in 1, but in 9, since under PEMDAS multiplication and division have the same priority (and thus should resolve left-to-right). So, you should resolve to 9 (6/2(2+1) => 6/2(3) => 6/2*3 => 3*3 => 9).
However, there's also PEJMDAS, which suggests that implied multiplication has an operator precedence greater than regular multiplication/division (J for Juxtaposition). This version says you should do 6/2(2+1) => 6/(2*2 + 2*1) => 6/(4+2) => 6/6 => 1.
The issue is that there is no universal agreement on which is correct. Most textbooks don't even use the / operator, but instead rely on writing out the full fraction like ⁶⁄₂₍₂₊₁₎ or ⁶⁄₂(2+1). This removes any ambiguity there might be, and thus they don't touch on which one is actually correct.
Most (but not all) calculators these days will treat implied multiplication the same as regular multiplication, so you get 9 in the given example. Most programming languages do the same, or outright disallow implied multiplication because it only confuses people. Academics won't ever use the ambiguous notation and will make sure to remove any ambiguity by either adding parentheses or using a notation like ⁶⁄₂₍₂₊₁₎, which makes things much more clear.
Neither 9 nor 1 is wrong, the question is just stupid.
Now do 2+2=5
No you don't, division is on the left, so it comes first
there's no way you're serious
:y
P/E/M(&)D/A(&)S
The precedences go like this:
parentheses > exponents > (multiplication = division) > (addition = substraction)
If you encounter operators with the same precedence (like multiplication and division) you go by the order they appear in the equation, left to right. That is how it works.
Yes. I am well aware. 6 ÷ 2 * (2+1) = (2+1) * 6 ÷ 2 = (6 * (2+1))÷2 = 6 * (2+1) ÷ 2
What he wanted to do is 6 ÷ (2 * (2+1))
But this just comes down to if you treat 2(2+1) as one or two expressions.
And honestly, i don't blame anyone for thinking one way or the other. Because i think most people understand that we wanted to write (2(2+1)), just that the overall parentheses is implied
Why i deleted that first comment within seconds was because i saw i had misread the meme as (6÷2)(2(2+1))