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解二元一次方程组,除教科书中介绍的代入法和加减法之外,还有其他的方法.本文介绍一种“参数法”,供初一同学学习时参考. 本文所举各例均选自人民教育出版社九年义务教材初中《代数》第一册(下)的习题.
There are other methods besides the substitution and addition and subtraction methods introduced in textbooks to solve the binary first-order equations. This paper introduces a “parameter method” that can be used as a reference for students to study in Grade One. Selected from the nine books of the People’s Education Publishing House, the junior middle school “Algebra” Volume I (below) exercises.