2x 1 15 x 7 July 8, 2019 16 32 64 128 12x 17 3x 1 2x 15 x 7 16 5 7 3 2x )= 15 1 x 2x 1 3 7x 5 15 x 2 5 2x 1 5 x 2 3 x 7 15 2x 1 7 or x 15 9 2x upon 3 1 7 x 15 3 2x 1 15 2 7 x 2x 7 2x - 7 = 15
