2 8 5x 7 4 July 8, 2019 16 32 64 128 8 7 2 5x )- 4 2x 3 )= 3x 2 4 (- 6x 17 )=- 7 8 5x 20 1 2x 7 2 =- 3 8 5x 4 5x 2 8 4x )= 7 48 8 5x 7 2 8 2 x 7 )= 4 5x 8 7 5x 2 1 4x 12 5x 7 )( 9x 2 4x 8 5x 8 3 4x 7 2 2 5 × 7 8 × 4 2-5x 8 2 5 x 4 8
