X 4 3 2 5 16 July 8, 2019 16 32 64 128 X 3 2 5 3 4 2x 16 15 2 3 4 2 1 5 * x * 16 X 5 2x 4 x 3 8x 2 16x 8 0 X 4 8x 3 18x 2 16x 5 3x 5 2 x 4 3 16 2 5 16 x 3 4 trailer ball 4 3 x 7 16 2 5 2 x 5 )- 4 2x 3 )= 16 X 5 3x 4 15x 3 45x 2 16x 48 X 4 x 4 x 4