X 3 5 July 8, 2019 16 32 64 128 X 3 50 20 X 3 5x X 3 512 X 3 5 2 X 3 5 4 X 3 5x 2 X 3 5 8 X 3 )= 5x 8 X 3 5 6 X 3 5x 2 9x 45 X 3 5x 2 4x 20 X 3 5 0 X 3 5 7 X 3 5x 2 4x 20 0 X 3 5 =- 1