题目内容
计算:3
×(-
)÷
(
).
3
|
| 1 |
| 8 |
1
|
| 1 |
| 2 |
5
|
原式=3
×(-
×
)÷(
×
)
=3×(-
)÷
×
×
÷
=-
.
|
| 1 |
| 8 |
|
| 1 |
| 2 |
|
=3×(-
| 1 |
| 8 |
| 1 |
| 2 |
|
|
|
=-
| 3 |
| 4 |
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题目内容
3
|
| 1 |
| 8 |
1
|
| 1 |
| 2 |
5
|
|
| 1 |
| 8 |
|
| 1 |
| 2 |
|
| 1 |
| 8 |
| 1 |
| 2 |
|
|
|
| 3 |
| 4 |