3 2 x 4 12 )= 9 July 8, 2019 16 32 64 128 5 x 2 )- 4 3x 3 )=- 9x 12 7 12 3 4 x 2 9 X 2 3 2x 4 3x 3 2x 2 9x 12 12 3 x 4 9 8 2 7 12 3 4 x 2 9 bằng bao nhiêu 12 2 x 4 3 12 * 4 + 3