7 x 1 )- 3 8x =- 9 July 8, 2019 16 32 64 128 8x 7 2 4x 3 )( x 1 )= 9 2 9 x 8 = 8x + 1 7-3x 1 1 8-x 1 9 7 x 8 + 1
