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