题目内容
(-2| 1 |
| 24 |
| 7 |
| 113 |
| 24 |
| 113 |
| 3 |
| 8 |
| 5 |
| 12 |
分析:先计算括号里面的除法,然后通分再进行除法计算.
解答:解:原式=(-
+
×
-
)×
,
=(
+
-
)×
,
=
×
=-
..
| 49 |
| 24 |
| 7 |
| 113 |
| 113 |
| 24 |
| 9 |
| 24 |
| 12 |
| 17 |
=(
| 49 |
| 24 |
| 7 |
| 24 |
| 9 |
| 24 |
| 12 |
| 17 |
=
| -51 |
| 24 |
| 12 |
| 17 |
| 3 |
| 2 |
点评:本题考查有理数的混合运算,比较简单,注意在计算时要细心,否则很容易出错.
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