5 3 5x 2 7 3x 1 July 8, 2019 16 32 64 128 5 3 5x 2 )= 4 7 3x )+ 1 5 3 5x 2 )= 4 7 3x )+ 1 and check the solution 5 2 5x 0 7 )- 3 1 3x 0 2 5 3 5x 2 )= 4 7 3x )+ 1 solve and check 3 5x 2 3x x 1 7 =- 5 21 2 5x 3 )+ 4x 3 7 2x )= 5 3x 1 )+ 8 5 3x 1 4 x 2 7 3 )- 5x (- 2 12 4 5 x 7 = 35 5 x 5 x 5 x 5 x 5
