7 2x 1 )- 3 6 6x July 8, 2019 16 32 64 128 1 8 1 2x 7 8 3 6x 6 7 2x 3 )+ 6 =- 2 (- 6x 20 )- 1 2x 7 7. 1 2 (6x- 6) 2 7x - 1 3x + 3 6x = 2 2 7x-1 3x+3 6x=2