题目内容
计算:
+2
-(
+
)+
.
| 12 |
|
| 8 |
| 75 |
| 6 | ||||
2
|
原式=2
+
-(2
+5
)-(2
-3
)
=2
+
-2
-5
-2
+3
=-5
+2
.
| 3 |
| 2 |
| 2 |
| 3 |
| 3 |
| 2 |
=2
| 3 |
| 2 |
| 2 |
| 3 |
| 3 |
| 2 |
=-5
| 3 |
| 2 |
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题目内容
| 12 |
|
| 8 |
| 75 |
| 6 | ||||
2
|
| 3 |
| 2 |
| 2 |
| 3 |
| 3 |
| 2 |
| 3 |
| 2 |
| 2 |
| 3 |
| 3 |
| 2 |
| 3 |
| 2 |