2 5x 7 3 12 July 8, 2019 16 32 64 128 5x 2 2x 3 12 7 5x 2 7 12x x 3 5x 2 12x 3 )+( 5x 7 4 2 3 x )+ 5x 7 12x 19 2) 5 + (7x - 12)/3 =x+13 2 5x-3 7
