题目内容
-12-[1
+(-12)÷6]2×(-
)3.
| 3 |
| 7 |
| 3 |
| 2 |
原式-12-[1
+(-12)÷6]2×(-
)3
=-1 -[1
+(-2)]2×(-
)
=-1 -
×(-
)
=-1 +
=
.
| 3 |
| 7 |
| 3 |
| 2 |
=-1 -[1
| 3 |
| 7 |
| 27 |
| 8 |
=-1 -
| 16 |
| 49 |
| 27 |
| 8 |
=-1 +
| 54 |
| 49 |
=
| 5 |
| 49 |
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