2 7 * 4x 8 July 8, 2019 16 32 64 128 7 4x 2 )+ 8x 9 7 4x 2 )- 8 5 3x 2x 4 2 4x 7 8 8x 2 4x 7 0 8x 11 2 4x 7 )+ 25 7 4x 8x 2 7 2 4x 8 )=- 9 2 4x 7 )=- 8 2x 1 2 3x 7 ) - 4x 8 2 7 4x )= 6 8 x 1 2 x 9 7 4x 8 7x 2 4x 7 8x 180 7x 2 4x 7 8x 5x 2 4x 7 =- 8