We used elementary row operations to solve the system of equations.
我们用初等行变换来解这个方程组。
By applying elementary row operations, the augmented matrix can be reduced to reduced row echelon form, revealing whether the system has a unique solution.
通过应用初等行变换,增广矩阵可以化为最简行阶梯形,从而判断该系统是否有唯一解。