X 15 1 3 2x 1 July 8, 2019 16 32 64 128 1 3 x 15 )+ 2x 16 7 x 1 )- 3 2x 1 )=- x 15 4 7x 15 1 x 3 4 2x 1 5 X 3 2x 5 10x 15 1 15 2x 1 )+ 3 x 2 )= 13x 19 2x 1 10 3 2x 15 x 2 6 2 3x 1 15 6x 2 x 1 3 2x 1 6 x 3 )+ 12 2x 1 )= 24 15 x 4 X 4 5 2x 1 3 2x 1 15