题目内容
(-
)×
-
÷(-4)+
÷(-2
)．
| 5 |
| 7 |
| 5 |
| 12 |
| 5 |
| 3 |
| 2 |
| 7 |
| 2 |
| 5 |
原式=-
+
-
=-
+
=0．
| 25 |
| 84 |
| 5 |
| 12 |
| 10 |
| 84 |
=-
| 35 |
| 84 |
| 35 |
| 84 |
=0．
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题目内容
| 5 |
| 7 |
| 5 |
| 12 |
| 5 |
| 3 |
| 2 |
| 7 |
| 2 |
| 5 |
| 25 |
| 84 |
| 5 |
| 12 |
| 10 |
| 84 |
| 35 |
| 84 |
| 35 |
| 84 |