If you add each like term together (so -6x + 6x, 5y + 4y, and 1 + -10) You do this you end up with 0 + 9y = -9 9y = -9 y = -9/9 y = -1 Then substitute it back in to one of the tw equations: 6x + 4(-1) = -10 6x + -4 = -10 6x = -10 +4 6x = -6 x = -6/6 x = -1