4 2x 7 3 3x 1 2 7 x July 8, 2019 16 32 64 128 4 7x-1 8=3 2+2 2x 4 7x3 2 4 7-2 3x 1 2x-9 3 (4x + 7)/3 + 2 = (7x)/2
