有一位数学家在题为“解题意味着什么”的演讲中说 :“解题就是意味着把要解的问题转化为已经解过的问题 .”转化在数学解题中的重要性由此可见 .简单的二元一次方程组解法的基本思想就是转化 ,方法就是“消元” .在二元一次方程组内 ,有两个未知数 .而此前我们只学过一元一次 One speaker said in a speech entitled “What it means to solve problems”: “Solving problems means translating the problem to be solved into a problem that has already been solved.” The importance of transformation in mathematical problem solving It can be seen that the basic idea of ​​a simple binary equation system is to transform, the method is “elimination of the yuan.” In the binary equation system, there are two unknowns. Before we learned only one yuan