分式问题是初中数学基本内容,也是每年各种竞赛重要考点,特别是条件求值问题.由于给出的条件形式各异,处理的方法也迥然不同,现将这类问题加以归类简析,供同学们参考.一、条件以等式形式出现 Fractional problem is the basic content of junior high school mathematics, and it is also an important test point for various competitions every year, especially the issue of conditional evaluation. Since the conditions given are different, the methods of processing are very different. Now we classify these problems into categories. For students’ reference. I. Conditions appear in the form of equations.