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jin ri shuo fa tan tan qu fen mu qu kuo hao de ji qiao
Author(s): 
Pages: 13-14
Year: Issue:  11
Journal: School Journal of Mathematics

Keyword:  灵活运用大括号分母技巧数学知识打破常规最小公倍数原方程合并同类项思维能力;
Abstract: <正>我们知道,解一元一次方程的常规步骤是:去分母、去括号、移项、合并同类项、系数化为1.去分母通常是方程的各项同乘以各分母的最小公倍数,去括号一般是先去小括号,再去中括号,最后去大括号,即由内向外去括号.但在具体运算时,可根据方程自身的特点,打破常规,灵活运用一些技巧解题.这样不但能提高解题的效率,而且有利于开拓思路,培养灵活运用数学知识的思维能力.下面就去分母、去括号的部分技巧举例说明如下.
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