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/sci/ - Science & Math

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3450471 No.3450471 [Reply] [Original]

Cant get the right result on this one:
(a – 5) – (a + 5) • 10
And for checksies (?) what did you get on this one?
3x – (10 – 2x)

I got 5x-10, Can anybody help me?

>> No.3450498

Correct simplifications are 9a-55 and 5x-10, respectively.

>> No.3450500

http://www.wolframalpha.com/input/?i=%28a-5%29-%28a%2B5%29*10

http://www.wolframalpha.com/input/?i=3x+%E2%80%93+%2810+%E2%80%93+2x%29

are you like 12 or something?

>> No.3450504
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3450504

27!

>> No.3450514

>>3450500

Wolfram got it wrong, there is multiple choice anw. and the anwser i got wasn't there?

>> No.3450522

>>3450514

wat.

wolfram is correct.

>> No.3450527

>>3450514
No, wolfram has it perfectly right. Odds are your test has it wrong though.

>> No.3450529
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3450529

>>3450522

No Sir.
Wolfram is wrong

>> No.3450537

Wolfram got: a-10 (a+5)-5

>>3450498
This guy got: 9a-55, which is included in the test.

Humanity 1 .- Wolfram 0

>> No.3450543

>>3450537

Except that guy is wrong.

>> No.3450546

>>3450537
I am >>3450498 and 9a-55 was a typo. The correct version is -9a-55.

>> No.3450549

>>3450546

Which is the answer that wolfram gave. But the real question is, why can't you do these simple simplifications in your head?

>> No.3450558

>>3450546

Well now i have to go change it back.. DOUCHEBAG!!!! jk, thanks for the help man!

>> No.3450595

>>3450549

I am on a holiday, i got this assignment last minute. Also im not autistic, my brain is on vacation..