3 1 3 x 12 July 8, 2019 16 32 64 128 3 1 2 x 3 12 4 3 3 1 x 12 7 1 3 x 120 1 3 x 12 )=- 6 1 3 x 125 1 3 x 12x 1 3 x 128 3 2x 1 3 x 2 12 1 3 x 121 1 3 x 12 )= 4 1 3 x 123 1 3 x 12 7 1 3 x 12 )- 4x 1 3 x 12 10 1 3 3x 12 )= x 4