题目内容
(
-
+
)÷(-
)．
| 1 |
| 6 |
| 2 |
| 7 |
| 2 |
| 3 |
| 5 |
| 42 |
原式=
×（-
）-
×（-
）+
×（-
）
=-
+
-
=-
．
| 1 |
| 6 |
| 42 |
| 5 |
| 2 |
| 7 |
| 42 |
| 5 |
| 2 |
| 3 |
| 42 |
| 5 |
=-
| 7 |
| 5 |
| 12 |
| 5 |
| 28 |
| 5 |
=-
| 23 |
| 5 |
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| 1 |
| 6 |
| 2 |
| 7 |
| 2 |
| 3 |
| 5 |
| 42 |
| 1 |
| 6 |
| 42 |
| 5 |
| 2 |
| 7 |
| 42 |
| 5 |
| 2 |
| 3 |
| 42 |
| 5 |
| 7 |
| 5 |
| 12 |
| 5 |
| 28 |
| 5 |
| 23 |
| 5 |
阅读快车系列答案