题目内容
计算:(
+
-
)÷(-
)
| 1 |
| 6 |
| 3 |
| 4 |
| 1 |
| 12 |
| 1 |
| 48 |
原式=(
+
-
)×(-48)
=-(
×48+
×48-
×48)
=-(8+36-4)
=-40.
| 1 |
| 6 |
| 3 |
| 4 |
| 1 |
| 12 |
=-(
| 1 |
| 6 |
| 3 |
| 4 |
| 1 |
| 12 |
=-(8+36-4)
=-40.
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