18x 5 6x 4 12x 3 6 * x 2 July 8, 2019 16 32 64 128 12 - (4x - 18) = (36 + 4x) + (18 - 6x) 2x + 5 = 2(x + 1) + 11 18 / 6 x (4 - 3) + 6