题目内容
-24×(-
+
-
)
| 5 |
| 6 |
| 3 |
| 8 |
| 1 |
| 12 |
-24×(-
+
-
),
=-
×(-24)+
×(-24)-
×(-24),
=20-9+2,
=22-9,
=13.
| 5 |
| 6 |
| 3 |
| 8 |
| 1 |
| 12 |
=-
| 5 |
| 6 |
| 3 |
| 8 |
| 1 |
| 12 |
=20-9+2,
=22-9,
=13.
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