题目内容
(
-
+
)÷(-
).
| 3 |
| 4 |
| 5 |
| 6 |
| 7 |
| 12 |
| 1 |
| 36 |
(
-
+
)÷(-
)
=
×(-36)-
×(-36)+
×(-36)
=-27+30-21
=-18.
| 3 |
| 4 |
| 5 |
| 6 |
| 7 |
| 12 |
| 1 |
| 36 |
=
| 3 |
| 4 |
| 5 |
| 6 |
| 7 |
| 12 |
=-27+30-21
=-18.
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题目内容
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