7 8x 3 4 =- 6 July 8, 2019 16 32 64 128 7 8x 4 3 4x 6 8x 7 6 3 2x 4 5x 2 2 32 3 8x 5 )= 4 (- 7 6x 7 2 3 8x )= 4 6 1 5x 7 8x 4 )- 3 1 4x 6 6x 7 3 8x 4 3 8x 4 )- 7 6x 2 2x 1 3 8x 4 − 7 6x2 2x − 1 3 8x 5 )= 4 6x 7 − 13
