4 1 2x 3 7 )= 2 8 July 8, 2019 16 32 64 128 4 1 2x 3 7 )- 2 8 5 2x 1 2x 7 2 =- 3 8 5x 4 8 2x 3 )+ 7 4 2 x )- 1 1 2x 7 2 3x 8 3 2 x 4 7 8x 3 4 1 2x 3 2 4 3 4x 2 )= 7 1 2x 8 2 5x 8 )- 7 4 1 2x )- 3 x 2 4 1/2 + 1 1/3 4 7x-1 8=3 2+2 2x