解三元一次方程组,其基本思路是:通过“代入”或“加减”进行消元,把“三元”化为“二元”,进而再转化为一元一次方程求解.解题的关键是如何实现“消元”转化.下面结合具体例题说明. The basic idea of ​​solving the ternary equations is to replace them by “substituting” or “additions and subtractions” and converting the “ternary” to “binary”, and then converting them into a one-dimensional equation to solve the problem. How to achieve the “elimination of” transformation. The following description of specific examples.