Question

-4x-2y=-12 , 4x+8y=-24 How do you solve this?

Answer 1

what are you solving for?

Answer 2

solving systems of equation by elimination

Answer 3

so you arent solving for x or y?

Answer 4

Yea I Am

Answer 5

for both x and y?

Answer 6

Yes.

Answer 7

ok. to get x, you have to get the y on the other side. do you know how to do that?

Answer 8

No

Answer 9

ok. well you have to do the opposite. since you are subtracting 2y on the left side, you add 2y on the right side. so the problem would be: -4x=-12+2y

Answer 10

Never Mind g2g ...Thank you for the help though.

Answer 11

ok no prob

Answer 12

; )

Answer 13

-4x - 2y = -12
4x + 8y = -24
-------------
0 + 6y = - 36
6y = - 36
y = -36/6
y = - 6
now sub -6 in for y in either of the original equations
4x + 8y = - 24
4x + 8(-6) = - 24
4x - 48 = - 24
4x = -24 + 48
4x = 24
x = 24/4
x = 6

now lets check it...
-4x - 2y = - 12
-4(6) - 2(-6) = - 12
- 24 + 12 = - 12
-12 = -12 (correct)

ANSWER: x = 6 and y = -6 or (6,-6)