Question

Please help me find the first step to solve by first eliminating the x variable.

4x + 9y = 21
3x – 8y = 1

a. Multiply the first equation by 3 and multiply the second equation by 4.
b. Multiply the first equation by –3 and multiply the second equation by –4.
c. Multiply the first equation by 8 and multiply the second equation by 9.
d. None of the above

Answer 1

To elimenate a variable, you need to have one positive and one negative of the same number. will a,b or c make one positive and one negative?

Answer 2

yes?

Answer 3

What one?
A, will make both positive,
B, will make both negative,
and C, will make them both equal.

Answer 4

NOTA

Answer 5

no clue, my guess is C

Answer 6

maybe A

Answer 7

sorry c is supposed to say positive... My answer would be D.

Answer 8

okay c:

Answer 9

:P

Answer 10

8P

Answer 11

ha ha lol I haven't seen that face in forever!

Answer 12

That's cause I'm old school yo.

Answer 13

...Derp...

Answer 14

0.o <==== that's mah derp face.

Answer 15

.-. ^-^

Answer 16

-________________________-

Answer 17

*facepalm*