3x 7 5x 6 2x 1 July 8, 2019 16 32 64 128 4 3x 7 )- 6 2x 5 )= 5x 1 3x 11 5x 7 6 2x 5 x 7 = 35 (3x - 7) / 5 - 1 = (2x - 6) / 3