4 x 1 2 12x 3 July 8, 2019 16 32 64 128 3 x 2 )= 1 4 12x 4 )- 5x 2 x 2 12x 4 1 2 3 15 12 x 4 4 x 2 1/12 4 + 4 = 12 4 1/12 x 2 3/4