Question

-3x + y = 7
-4x + 4y =-12

Answer 1

Explanation:

multiplying eq 1 by 4and eq 2 by 3 ,we get

-12x+4y=28

-12x+12y=-36

solving eq 1and 2

4y-12y=64

-8y=64

y=-8

x=-5