12 x 1 3 4 mũ 3 2 mũ 3 July 8, 2019 16 32 64 128 12 x trừ 1 chia 3 4 mũ 3 2 mũ 3 12 x 4 / 3 12 1/2 x 3 3/4 12 3/4 x 2 1/2 12 x 3 1/4
