对于含有多层括号的整式加减运算,要根据算式的特点,采取灵活的方法,目的是尽可能减少去括号的次数和变号的项数,一般来说,这类问题只要注意:一要按照去括号的顺序,二要注意符号法则就可以了.但是,有一些题目可以打破常规思路,采取一些灵活的解题方法,使运算过程更简捷. For integer addition and subtraction operations that include multiple layers of parentheses, a flexible approach should be taken based on the characteristics of the equations. The goal is to minimize the number of parentheses and variable number of entries. In general, this type of issue requires only attention: According to the order of the parentheses, we must pay attention to the rule of symbols. However, there are some problems that can break the conventional thinking and adopt some flexible solution methods to make the operation process more simple.