题目内容
| 7 |
| 8 |
| 3 |
| 4 |
| 1 |
| 6 |
分析:先算小括号里面的减法,再算括号外的加法.
解答:解:
+(
-
),
=
+
,
=
+
,
=
.
| 7 |
| 8 |
| 3 |
| 4 |
| 1 |
| 6 |
=
| 7 |
| 8 |
| 7 |
| 12 |
=
| 21 |
| 24 |
| 14 |
| 24 |
=
| 35 |
| 24 |
点评:本题考查了简单的分数加减混合运算,关键是能正确的进行通分.
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题目内容
| 7 |
| 8 |
| 3 |
| 4 |
| 1 |
| 6 |
| 7 |
| 8 |
| 3 |
| 4 |
| 1 |
| 6 |
| 7 |
| 8 |
| 7 |
| 12 |
| 21 |
| 24 |
| 14 |
| 24 |
| 35 |
| 24 |