题目内容
计算:(
-
+
)×(-48)
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(
-
+
)×(-48),
=
×(-48)-
×(-48)+
×(-48),
=-8+36-4,
=24.
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| 3 |
| 4 |
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| 12 |
=
| 1 |
| 6 |
| 3 |
| 4 |
| 1 |
| 12 |
=-8+36-4,
=24.
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