题目内容
计算:-(
-
-
)×78.
| 2 |
| 13 |
| 1 |
| 3 |
| 1 |
| 6 |
-(
-
-
)×78
=-(
×78-
×78-
×78)
=-(12-26-13)
=-12+26+13
=27.
| 2 |
| 13 |
| 1 |
| 3 |
| 1 |
| 6 |
=-(
| 2 |
| 13 |
| 1 |
| 3 |
| 1 |
| 6 |
=-(12-26-13)
=-12+26+13
=27.
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| 2 |
| 13 |
| 1 |
| 3 |
| 1 |
| 6 |
| 2 |
| 13 |
| 1 |
| 3 |
| 1 |
| 6 |
| 2 |
| 13 |
| 1 |
| 3 |
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