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去分母时应注意

更新时间: 2020-09-15 00:00:00     

1、两边同乘以所有分母的最小公倍数,但不能漏乘不含分母的项;

2、分数线有括号作用,去分母后,应将分子作为一整体加上括号,之后去掉分数线;

3、注意分母是否为0,否则无意义。

关键词: 分母 注意

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