5x 4 8x 8 July 8, 2019 16 32 64 128 6 8x 5x 8x 4 9x 4 5x 8x 8 8x 5x 4 x ax 8 5x 8 x 8x 4 5x 8 10 4 8x 4 4 (- 5x 8 )= 16 8x