解三元一次方程组的基本思路就是消元,化三元为二元、一元,最终求出各未知数的值,完成解题过程。但是,在具体操作过程中,许多同学却难以下手,不清楚先消去哪个未知数好。其实,只要根据题目的结构特征,灵活运用所学知识,采用相应的消元策略,就能避繁就简。 The basic idea of ​​solving the ternary equations is to eliminate the yuan, to convert the ternary to binary and one dollar, and finally to find the value of each unknown to complete the problem-solving process. However, in the course of specific operations, many students are difficult to start, it is not clear which one to eliminate the unknown. In fact, as long as the knowledge of the subject is used flexibly, the knowledge learned and the corresponding elimination strategy can be used to avoid complications.