题干
化简： ( −3a
⋅b
) (a
⋅b
)÷(−2a
⋅b
) =____.
| 1 |
| 3 |
| 2 |
| 3 |
| 1 |
| 2 |
| 1 |
| 2 |
| 5 |
| 6 |
| 1 |
| 6 |
答案(点此获取答案解析）
| 3 |
| 2 |
