3 2x 1 6 2x 7 2 5 6x 1 July 8, 2019 16 32 64 128 3 - 5(2x + 1) 7x - 2(x + 1) 6(1+x)+2 3(1-x)+7x 1. (7 6 + 2x) - (3x - 6 4) 0 1 - 3(1 2 - 2x) = 7 6x - 6 6