5 4 2x 7 July 8, 2019 16 32 64 128 5 4 2x 7 ) - 39 5 2x 4 7x 5 x 4 2x 7 5 3x 4 )-( 2x 7 4 5 2x )+ 3 7 X 5 4 7 2x 11 3 5 3x 4 )= 7 2x 3 3x 5 2x =- 4 7x 3 1 2x 4 5 2x 7 4 (- 2x 5 7x 2 4 5 x 8 )+ 2x =- 71 7x 5 4 2x 9 3 x 5 )+ 2x 4 7 4 2x 5 =- 7 6 17 5 2x 9 )= 4 2x 7