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一次方程组在中学教材里占有重要地位.有关一次方程组理论的系统叙述,都已见于一般的高等代数书中,这里不必重复,至于解一次方程组的一些技巧,因为并不算难,所以也不用多说,本文只打算围绕中学教材,而且在用很少一点算术知识的基础上,谈一淡用初等解法解一次方程组的理论,以便使中学教科书上解一次方程组的法则,能够找到一个根据,供教师参考.
A system of equations plays an important role in high school textbooks. Systemic narratives about the theory of a system of equations have been found in the general higher algebra books. There is no need to repeat them here. As for the techniques of solving a system of equations, it is not difficult. Needless to say, this article only intends to focus on middle school textbooks, and on the basis of using a little bit of arithmetic knowledge, we will talk about using the elementary solution to solve the theory of a system of equations so that the equations of a system of equations can be solved in high school textbooks. Find a basis for teachers’ reference.