分式运算是代数式恒等变形的重要内容,是初中学生必须熟练掌握的基本技能,尤其是异分母分式的加减法。更要注意其变形的基本方法、技能、技巧,为达到这一目标。本文特从如下几个方面给予引导、点拨、梳理,供同学们学习时应用。 Fractional operation is an important content of algebraic equal deformation, and it is the basic skill that junior high school students must master, especially the addition and subtraction of different denominator fractions. More attention should be paid to the basic methods, skills, and techniques of its deformation in order to achieve this goal. This article specializes in guiding, coaching, and combing from the following aspects for students to apply when learning.