Question 947341
y=2x-6
2y=-x+8 Substitute equality above for y
2(2x-6)=-x+8
4x-12=-x+8  Add 12 to each side
4x=-x+20  Add x to each side
5x=20 Divide each side by 5
x=4
y=2x-6
y=2(4)-6
y=8-6
y=2 
ANSWER: x=4 and y=2
CHECK
2y=-x+8
2(2)=-4+8
4=4