在进行含有括号的整式加减运算时,若能根据算式的特点巧去括号,就能减少运算环节大大提高解题的效率.一般来说,对于这类问题,只要注意去括号的顺序和去括号的法则就可以了.但是,对于有些题目,可以打破常规思路,采取一些灵活的解题方法,使运 In the addition and subtraction of parentheses, if the parentheses can be used according to the characteristics of the formulas, the operation can be reduced and the efficiency of the problem can be greatly improved. Generally, for this kind of problem, only pay attention to the order of parentheses and The rules of the brackets are all right. However, for some topics, you can break the conventional thinking and adopt some flexible methods to solve problems.