12x 6 3 4x 2 July 8, 2019 16 32 64 128 12x 21 3 4x 6 2 3 12x 6 )=- 3 (- 4x 12 3 4x 2 12x 6 how many solutions 12 / 4 x 6 12 x 6 x 4 12 6 x 3 4
