小聪明是初一（1）班的学生，他平时很喜欢做数学题，而且在解题时十分善于动脑筋，因此经常有一些与众不同的解题方法．下面是他解课本上的习题时的部分解答．请同学们认真研究一下，这些方法巧不巧？妙不妙？你有没有想到？例1解方程可先去申括号，同时化去小括号，则运算将 Xiaoxiao is a student of the first class (1). He usually likes to do math problems, and he is very good at using his mind to solve problems. Therefore, he often has some unique solutions. Here are some of the answers to his problems in solving textbooks. Ask the students to carefully study, these methods are clever? Wonderful? Have you ever thought of it? Example 1 Solution Equations can be applied to the parentheses first, and parentheses at the same time.