A.(16 X 6+ 16 X3 + 16) - (12 X 65 + 12 X 3 + 2 X12) B. (16 X 6+ 16 X3...

Bài 1: a.(16 x 6+ 16 x3 + 16) - (12 x 65 + 12 x 3 + 2 x12)

b. (16 x 6+ 16 x3 + 16) - 12 x 65 - 12 x 3 - 2 x12