二元一次方程组是初中代数的一个重要内容,教材上介绍了代入消元和加减消元两种解法,在熟练掌握常规方法的基础上,再从题目的结构特点出发,灵活采用本文介绍的几种特殊的消元技巧,不仅可以简化解题过程,而且有助于我们创造性思维能力的形成和培养,试从下面几例 The binary equation system is an important part of the junior high school algebra. The textbook introduces two kinds of solutions, substitution into elimination and addition and subtraction elimination. Based on the mastery of conventional methods, and then proceed from the structural characteristics of the subject, the introduction of this article is flexible. Several special elimination techniques not only simplify the problem solving process, but also contribute to the formation and cultivation of our creative thinking ability.