5 2x 9 )= 5x 1 July 8, 2019 16 32 64 128 5x 9 2x 6 5 5x 12 4x 5 2x 1 )- 3x 5x 9 5x 14 x 5 2x 9 180 23 2 5x 9 )= 5 2x 11 4x 9 2x 5 8x 16 5x 12 10x 5 2x 9 5x 7 9 2x 5 5x 10 (5x - 9) ^ 2 = (9x - 5) ^ 2