15 5 x ( 9 x 3 3 July 8, 2019 16 32 64 128 (- 3 10 x 15 5 25 3 x (- 9 7 3 5 x 15 31 x 2 9 3 x-5=x+3 15 * 3 x = 9 15 x 3 / x = 9
