9 2 3 x 7 5 6 July 8, 2019 16 32 64 128 9 8 7 6 5 x 4 3 2 1 9 10 6 5 x 3 2 7 4 X 2 3 y =- 5 6 z =- 7 9 5 x 7 = 35 9 3/7 x 5/22