我国古代对二元一次方程的研究源远流长,二元一次方程组的解法灵活多样,一个方程组有很多种不同的解法,并且在很多实际中常用到。因此,同学们应灵活掌握二元(三元)一次方程组的解法及其应用,对思维的扩散都有帮助。下面列举一二例,供同学们参考。例1已知方程组x+2y=32x+ay=b,试 In ancient China, the study of binary equations was of long standing and the solution to the binary equations was flexible and varied. There are many different solutions to a system of equations, and it is commonly used in many practical applications. Therefore, students should be flexible in the solution and application of the binary (ternary) first-order equations, which will help the diffusion of thinking. List one or two examples below for reference by students. Example 1 Known equations x+2y=32x+ay=b, try