X 6 3x 5 6x 4 7x 3 6x 2 3x 1 July 8, 2019 16 32 64 128 6) - 7(- 4x + 3) + 2(3x - 7) = b) 4 5(- 8y - 7) - 3 9(6 - 9y) =
