Question 964238
.
2x+2y=8
4x+2y=4 Subtract this from above
-2x=4 
x=-2 
ANSWER 1: x=-2... Back solve using this x value.
2x+2y=8
2(-2)+2y=8
-4+2y=8
2y=12
y=6
ANSWER 2: y=6
CHECK:(use equation not used to back solve)
4x+2y=4
4(-2)+2(6)=4
-8+12=4
4=4