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/sci/ - Science & Math

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Whats the solution for this?
>>
67
>>
37
>>
>>10562431
>>
>>10562431
>x+x+x=45
x=15
>y+y+x=23
>y+y+15=23
y=4
>y+z+z=10
>4+z+z=10
z=3
>z+y+y*x=?
>3+4+4*15=?
?=67

>>10562434
correct
>>10562439
wrong
>>10562440
not a number
>>
165
>>
>>10562500
Have you ever heard of the order of operations?
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>>10562431
$\displaystyle \left \{ \begin{matrix} x+x+x &= 45 & \Leftrightarrow x=15 \\ y+y+x &= 23 & \Rightarrow y=4 \\ y+z+z &=10 & \Rightarrow z=3 \end{matrix} \right. \\ z+y+y \cdot x = 3+4+4 \cdot 15=67$
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>>10562431
67 if you're PEMDAS masterrace
165 if you're a Common Core retard
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>>10562431
150
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>>10562516
how do you get those squiggles?
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>>10562460
also >>10562440
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>>10562547
it's LaTeX
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>>10562431
67 :D
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>>10562516
wrong
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>>10562431
Try this fag
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>>10562547
>>
>>10562431
>>
>>10562431
360
>>
>>10562575
https://duckduckgo.com/?q=3%2B4%2B4*15&t=h_&ia=calculator
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>>10562618
5pi/2
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>>10562700

There's no need, it's unambigious and the answer is 67.
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You need to list your variables
>>
67
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>>10563022
But all these stupid questions are order of operations questions. Therefore parentheses are important.
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>>10563018
Thank
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>>10563297

if you want the answer to be anything other than 67 then you indeed need parenthesis, but there's no ambiguity in the original expression.
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>>10562431
orange = 45/3 = 15
banana = (23- 15)/2 = 8/2 = 4
apple = (10-4) / 2 = 6/2 = 3
3+4+4*15 = 67
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>>10562431
orange you glad I didn't say banana again?
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my buddy's 8-yr-old just got this right
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>>10562520
No idea how common core works. Can you explain how it gives 165
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>>10566107
not using order of operation. basically reading 3+4+4*15 as (3+4+4)*15
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>>10562431
165
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>>10562431
you have to add all the bananas first because they are the superior fruit
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>>10565188
This is hardly a problem for an eight year old. Upper level mathematics like this is best understood by middle schoolers
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>>10562520
>>10566107
Wrong. If you use common core, the orange is 20 because you have to round up to the nearest 10s.

The answer is actually 11 x 20, or 220.
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>>10569688
Is the rounding thing true are you trolling?
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>>10569727
Trolling pretty hard, but I have seen that pic with the rounding up
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>>10569727
>actually considering if it's true