4 2x 7 2 9 x 3 2 July 8, 2019 16 32 64 128 4 2x 7 2 9 x 3 2 0 2x 7 4 2x 4x 9 3 x 2 3) 9x - 7 9/20 * x = 4 03 2) 9 - 7(x + 3) = 5 - 4x