12 4 x 3 6 July 8, 2019 16 32 64 128 12 4 x 2 6 3 12 4x 3 x 6 12 =- 4x 3 6x 12 1 4 x 6 3 4 1 12 x 3 4 5 6 3x 16 12 1 x 6 4 x 3 6 X 4 x 3 6x 2 14x 12 0 6 4 x 12 8 )= 3 2 12 3 x 6 4 x 5 5 12 6x 4 x 3 8x 13 11x 4 x 3 )= 6x 12 2x 12 4x 3 6 2x 4 4x 3 )= 6 x 12 12 3 x 6 4 432 24 /( 12 4 2 x 6 3