15 2 x 3 1 July 8, 2019 16 32 64 128 15 2 x 11 3 2 15 x 3 14 X 2 15 x 3 10 0 2 15 x 3 15 15 1 2 x 3 4 15 2 3 2x 15 15 2x 3 )= 13 5x 2 3 x 15 17 2 3 x 15 16 15 11x 2 3 x 15 1 2 3 2 x 10 3 2x 1 4 15 2 x 3 X 3 3x 2 13x 15 0 15 - 2 3 x 18 2 15 x 3 10