7x 2 5x 3 2x 2 5x 7 July 8, 2019 16 32 64 128 7x 2 5x 3 2x 2 7x 4 7x 2 5x 3 2x 2 7x 8 Subtract 2x 2 5x 7 from 7x 2 5x 3