3x+3y+1=x+4y 7-2x+2y=x-8y
3x+3y+1=x+4y 3x-x+3y-4y=-1 2x=y-1 x=1/2y-1/2 7-2x+2y=x-8y -2x-x=-8y-7-2y -3x=-10y-7 x=10/3y+7/3