题目内容
-5
-2+3
-6.5-4
.
3 |
5 |
3 |
5 |
1 |
2 |
-5
-2+3
-6.5-4
=(-5
+3
)+(-6.5-4
)-2
=-2-11-2
=-15.
3 |
5 |
3 |
5 |
1 |
2 |
=(-5
3 |
5 |
3 |
5 |
1 |
2 |
=-2-11-2
=-15.
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