2x + 9y = - 9 - 3x +3y = 8

2x+9y=-9 -3x+3y=8/*3 2x+9y=-9 -9x+9y=24 11x=-33 2x+9y=-9 x=-3 2*(-3)+9y=-9 x=-3 9y=-9+6 x=3 9y=-3/÷9 x=-3 y=-⅓