不定方程(组)的解一般是不确定的,有无数多个,但在具体问题中,由于未知数的取值范围受到限制,使得解的不确定性又变得确定.下面介绍几种常见的确定方法.1.利用某一范围内整数个数的有限性例1王恒同学出生在20世纪,他把出生的月份乘以2后加上5,把所得的结果乘以50后加上出生的年份,再减去250,最后得到 The solutions of indefinite equations (groups) are generally indefinite, with an infinite number of them, but in specific problems, the uncertainties of the unknowns become definite due to the limited range of unknowns. Here are some common Determination method .1. The use of a limited number of integers in a range of cases 1 Wang Heng was born in the 20th century, he multiplied the birth month by 2 plus 5, the result multiplied by 50 plus birth Of the year, minus 250, and finally get