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/sci/ - Science & Math

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8538254 No.8538254 [Reply] [Original]

Alright I'm starting to feel like I have a IQ of 0. The google calculator says the equation 20/5(2x2) = 16. Did I just go to a parallel universe?

>> No.8538265

>>8538254
pemdas

>> No.8538277

>>8538265
I thought it was bedmas
brackets
exponents
division
multiplication
addition
subtraction

>> No.8538291

>>8538277
Multiplication and division have the same priority. So you do whichever is first.

>> No.8538357

>>8538254
bidmas is common core?

>> No.8538369

>>8538254
20/5(2*2)
20/10*10
20
I am doing it right?

>> No.8538372

Pemdas... and you just do the md and as from left to right.
20/5 (2*2)
20/5 (4)
4 (4)
16

>> No.8539264

>>8538291
Right i guess it's now same priority and work from left to right. Did they just change this? I don't remember two correct answers when i did math.

>> No.8539285

>>8538357
>I
THEY'RE EXPONENTS YOU NIGGER REEEEEEEEEEEEEEEEEEE

>> No.8539357

>>8538254
Different calculators do it differently

>> No.8539358

20/5(2x2)
(20/5)x(4/1)
4x4
16

jej

>> No.8539421

What is going on in this thread, the answer is obviously and unambiguously 1 if you knew what is actually going on

>> No.8539477

The answer is that if you use / as an operator without either clearly defining it or unambiguously using parenthesis you're a fucking idiot

>> No.8539668

>>8539421
Brianlette

>> No.8539794

>>8538254
It's a poorly written bait problem. If someone tells you to solve it you tell them to learn how to write equations properly.

It should be either
20/(5*(2*2)) which gives 1
or
(20/5)(2*2) which gives 16

>> No.8539804
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8539804

>>8538254

>> No.8539947

>>8538369
Nope, you only do yhe multiplying thingy you did with the shit in the brackets if it is something like 5(2+2) not with 5(2*2).
PS: I don't know mathematical terms in English

>> No.8541353

Is this a real thread, I know its 4chan... But come on this is /sci/

>> No.8541355

>>8538265
Don't listen to this brainlet, there's no such a thing as pemdas. The computer is just reading everything from left to right, which I believe is also the convention when you have ambiguous notation.

>> No.8542967

>>8538254
Parentheses first, you get 20/5(4). 20/5 = 4, * 4 = 16.

>> No.8542972

>>8538254
That image is fake. The "old way" gives multiplication higher precedence than division, which is simply wrong - both have equal precedence.

>> No.8542982

>>8538254
The actually correct answer is to use non-ambiguous notation.

>> No.8543498

>>8539477
+1

>> No.8543503

>>8539264
It's the liberal's new way of education, everyone is correct.

in fact, if a kid answered "your mama", it would be "equally correct"

>> No.8543509

>>8539668
Branlette is french for jacking off

>> No.8543510

>>8538254
>>/sci/image/9d7fBoxwNFWoMV2V8t1-Ww

>> No.8543520

>>8539285
I for Indices.

>> No.8543627

>>8538277
Lrn2parentheses

>> No.8543632

>>8543503
>ITS TEH LIBRULS
gtfo fgt pls

>> No.8544660

>>8538254
I think I see what mistake is made.
Before computers were mainstream, it was much more common to represent division vertically.
Vertical representation of division inherently treats the denominator and divisor as being in brackets, so if you wrote 20 / 5 (2*2) like that with everything as either a denominator or divisor, it would be 20 / (5 (2*2)).
So I believe that this confusion is the result of an incorrect conversion of a vertical division to a horizontal division.

>> No.8544664

>>8544660
The old way is "if you think ssomeone may doubt the order of operations even a little bit - put parentheses, you lazy fuck

>> No.8545225

>>8538254
actually the the line that makes a fraction i.e. / is actually type of parentheses called the vinculum, therefore the answer is 1.