题目内容
| 1 |
| 14 |
| 1 |
| 4 |
| 1 |
| 12 |
分析:先算括号内的,再算括号外的.括号内的,通分计算,最后算乘法.
解答:解:
×(
+
),
=
×
,
=
.
| 1 |
| 14 |
| 1 |
| 4 |
| 1 |
| 12 |
=
| 1 |
| 14 |
| 1 |
| 3 |
=
| 1 |
| 42 |
点评:此题考查了分数的四则混合运算,注意运算顺序,是解题的关键.
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题目内容
| 1 |
| 14 |
| 1 |
| 4 |
| 1 |
| 12 |
| 1 |
| 14 |
| 1 |
| 4 |
| 1 |
| 12 |
| 1 |
| 14 |
| 1 |
| 3 |
| 1 |
| 42 |