题目内容
|-5
|×(
-
)×
÷(1-
)．
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 2 |
| 3 |
| 11 |
| 1 |
| 4 |
原式=
×（-
）×
×
=-
．
| 11 |
| 2 |
| 1 |
| 6 |
| 3 |
| 11 |
| 4 |
| 3 |
=-
| 1 |
| 3 |
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| 11 |
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| 11 |
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| 11 |
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