8 x 3 5x 12 July 8, 2019 16 32 64 128 3 8 x 6 5x 12 14 5x 8 x 3 15 12x 6x X 3 5x 2 12x 8 5x 8 12 2 x 3 3 5x 8 )=- 2 (- x 7 )- 12x 8 5 x 12 8×12 5
