9 3 4 4x 12 July 8, 2019 16 32 64 128 X 4 4x 3 12x 9 0 X 4 4x 3 12x 9 8x 17 x 3 )= 4 4x 9 )+ 12 3 4x 4 )= 2 5x 9 )- 12 6x 3 4x 12x 4 9 3 3x 12 )=- 4 4x 9 3 4x 9 6x 4 12 4 + 4 = 12 4/9 x 12