3 7 x =- 1 3 2 9 July 8, 2019 16 32 64 128 3 5 7 9x 1 3 )= x 2 1 3 4 5 * x 7 3 1 2 9 3 3 7 x 1 2 9 8 3 x 3 = 9 5 x 7 = 35
