3 4x 4 7 1 2x July 8, 2019 16 32 64 128 2x 3 5 x 3 4 4x 1 7 2x 6 1 4 3 4x 7 1 2 4 3 4x 2 )= 7 1 2x 8 19 4 7 2x =- 1 4x 3 2 4x 7 1 2 =- 3 4 2x 5 2x 3 5 x 3 4 4x 1 7 solve and check