Question

solve for x.
-3x+7y=2
-2x-3y=-4

A. x=-22/23
B. x=22/23
C. x=2/23
D. x=-2/23

Answer 1

@agent0smith can you help me?

Answer 2

@skullpatrol

Answer 3

@KamiBug help?

Answer 4

I know I did this in 8th grade but I don't remember it, sorry!

Answer 5

does it have to be done a certain way...elimination, substitution, matrix...or does it matter ?

Answer 6

this is elimination
-3x + 7y = 2 --->(3)
-2x - 3y = -4 --->(7)
--------------------
-9x + 21y = 6 (result of multiplying by 3)
-14x - 21y = -28 (result of multiplying by 7)
-------------------add
-23x = -22
x = 22/23