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分式是初中数学的一个重要内容．分式的概念及运算在学习函数和方程等知识时占有重要的地位和作用,是中考的一个重点,数学竞赛中也常出现与分式有关的试题,下面列举七例说明如何思考分式问题．
Fractional is an important part of junior high school mathematics. Fractional concepts and operations play an important role in the learning of functions and equations, and they are a key part of the mid-term exam. Questions related to fractions often appear in math contests. The following seven examples illustrate how to think about fractional problems. .