2 x 4 2 15 July 8, 2019 16 32 64 128 2 x 4 2 15 17 X 2 1 )* 4 15 2 X 2 3 4 15 2 X 4 2 15 7 X 4 2 15 21 7 1 2 x 2 4 15 X 4 4 2 x 4 2 15 0 2 * 4 x 15 * 2 x 8 0 7 1 2 х 2 4 15 2 x 4 2 6 156 7x 9y 2 2x 4 2 =- 15 2 4 2 15 x )= 10