Question 55515
X+Y=2
8-2X=4Y-2
X=2-Y
8-2(2-Y)=4Y-2
8-4+2Y=4Y-2
4Y-2Y=8-4+2
2Y=6
Y=6/2
Y=3
X+3=2
X=2-3
X=-1
PROOF
8-2*-1=4*3-2
8+2=12-2
10=10