7 6x 1 3 5 2x July 8, 2019 16 32 64 128 6x 5 7 2x 1 3 2 7 4x 3x 5 6x 1 2x 3 6/7x 5 6x - 7 5 7. 1 3 (6x 6) (7x - 3)/6 = (5x + 1)/2