题目内容
计算:
+
+
-
.
| 5 | ||
4-
|
| 1 | ||
3+
|
| 1 | ||
3-
|
11+
| ||
|
原式=4+
+
-
+
+
-
-
=7-
.
| 11 |
| 3 |
| 2 |
| ||
| 2 |
| 3 |
| 2 |
| ||
| 2 |
| 11 |
| ||
| 11 |
=7-
| ||
| 11 |
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题目内容
| 5 | ||
4-
|
| 1 | ||
3+
|
| 1 | ||
3-
|
11+
| ||
|
| 11 |
| 3 |
| 2 |
| ||
| 2 |
| 3 |
| 2 |
| ||
| 2 |
| 11 |
| ||
| 11 |
| ||
| 11 |