题目内容
-13-(1-0.5)×
×[4-(-3)2]
| 1 |
| 3 |
原式=-1-0.5×
×(4-9)
=-1-
×(-5)
=-1+
=-
.
| 1 |
| 3 |
=-1-
| 1 |
| 6 |
=-1+
| 5 |
| 6 |
=-
| 1 |
| 6 |
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题目内容
| 1 |
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| 1 |
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| 1 |
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