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消元是解三元一次方程组的关键,若能根据方程组中各未知数系数的特点,灵活地进行消元,则可以提高解题速度.下面介绍几种消元策略,供同学们学习时参考。
Elimination is the key to solving the ternary equations. If we can flexibly eliminate the elements according to the characteristics of the unknown coefficients in the system of equations, we can improve the speed of problem solving. The following describes several elimination strategies for students to learn. reference.