题目内容
-12011÷(-3)2+5×(-
)3-(-15)÷5.
| 1 |
| 2 |
-12011÷(-3)2+5×(-
)3-(-15)÷5
=-1÷9+5×(-
)-(-3)
=-
+(-
)+3
=(-
)+3
=2
.
| 1 |
| 2 |
=-1÷9+5×(-
| 1 |
| 8 |
=-
| 1 |
| 9 |
| 5 |
| 8 |
=(-
| 53 |
| 72 |
=2
| 19 |
| 72 |
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