Question 589483
(1) 3x-y=-2 
(2) -2x+2y=8
multiply 3x-y=-2  by 2
(1a) 6x-2y=-4
add (1a) to second (2) equation
-2x+2y=8
6x-2y=-4
4x=4
x=1
substitute x=1 into any of the three equations
-2x+2y=8
-2+2y=8
add 2
2y=10
y=5
solution
x=1
y=5