Hi (1) 3x - y = 9 (2) 3y + 11 = 5x Using the substitution method: y = 3x-9 3(3x-9) + 11 = 5x 9x - 27 + 11 = 5x 4x = 27-11 4x = 16 x = 4 , y = 3 Checking our Work! 3*3 + 11 = 5*4 20 = 20