2x - 2y = 12 -2x - 3y = -22 solution could be (x,2) =============== 2x - 6y = 10 x + 8y = 5 solution could be : (5,y) ============== 3x - y = -5 x + 4y = 7 solution could be : (x,2) ============= x + y = 2 2x + y = 13 solution could be : neither....is this one written correctly ?
