7 2x 1 July 8, 2019 16 32 64 128 7 2x 13 7 2x =- 19 7 2x 15 7 2x 11 7 2x 10 7 2x 12x 7 2x 17 7 2x 12 7 2x 14 7 2x 10 4x 7 2x 16 7 2x 13 answer 7 2x 1 3 x 2 7 2x 1 3x 7 2x 1 )= 21
