{4x+2y=-22 {3x-1/7y=-5

Question

{4x+2y=-22
{3x-1/7y=-5

Answer 1

{4x+2y=-22*3
{3x-1/7y=-5*4
-{12x+6y=-66
-{12x-4/7y=-20
6 4/7y=-46::6 4/7
y=-46*7/46=-7
4x+2(-7)=-22
4x=-22+14
4x=-8:4
x=-2