2/3x+2y=1 2y=-2/3x+1 y=1/3x+1/2
x/4+7y/4=2 x+7y=8 7y=-x+8 y=-x/7+8/7
5x-3y=x+2y 4x=5y y=4x/5
2(3y-3)=6x+4 6y-6=6x+4 6y=6x+10 y=x+5/3