学习二元一次方程组,离不开消元思想,消元离不开代入消元法和加减消元法,在运用消元法解二元一次方程组时,还要注重整体思想的运用.灵活地利用好这种思想方法可以提高解题速度和正确率,它是解决二元一次方程组相关问题的灵丹妙药.一、发现整体巧妙代入 Learning binary equations can not be separated from the thought of eliminating elements, elimination elements can not be separated into substitution elimination method and addition and subtraction elimination element method, the use of elimination element method to solve the binary equations, but also pay attention to the use of the overall idea Flexibility to make good use of this method of thinking can improve the speed and accuracy of solving problems, which is a miracle cure for the problems associated with the binary system of equations.