Question

how do i find solve x






Evaluate if x = –4 and y = 13.
3(2x – y)

A.
90

B.
82

C.
–15

D.
–63

Answer 1

Alright first step is to insert your values for x and y.

Answer 2

3(2(-4)-13)

Answer 3

Now because we have 2(-4) or 2(x) we want to simplify that bit.

2 * -4 = -8

rewriting our equation...


3(-8-13) = ?

Are you following so far?

Answer 4

From there, we're going to follow the rules we learned last question. PEMDAS. (used to know a rhyme for this.. kinda forgot it now)


-8 -13 = -21

3(-21) = ?

Answer 5

you mean please excuse me dear aunt sally ?

Answer 6

No.. there was a different one. It involved cookies.

Answer 7

does this 1 invole negetive numbers?

Answer 8

Yes.


3(-21) = ?

Whatever "?" happens to be is your answer.

Answer 9

-18 yah

Answer 10

Except your answer is not -18.

Answer 11

oohh i got itt

Answer 12

Parenthesis means me multiply unless told otherwise.

And?

Answer 13

90

Answer 14

O_O

Answer 15

What? no.

Answer 16

3(-21) = -63.

You multiply 3 x -21

Answer 17

-63

Answer 18

ommg i feel like a idiot