2x 6 x 1 7x 3 July 8, 2019 16 32 64 128 7 x 3 2 2x 6 x 1 7x 7x 2x 6 x 1 3x 2 3x 3 2x 2 7x 6 )/( x 1 2x 7 2 7x - 1 3x + 3 6x = 2