1/2(a+b)+1/2(a-b)化简
来源：学生作业帮助网 编辑：六六作业网 时间：2024/12/27 12:48:12
1/2(a+b)+1/2(a-b)化简1/2(a+b)+1/2(a-b)化简1/2(a+b)+1/2(a-b)化简1/2(a+b)+1/2(a-b)=1/2(a+b+a-b)=1/2(2a)=a
1/2(a+b)+1/2(a-b)化简
1/2(a+b)+1/2(a-b)化简
1/2(a+b)+1/2(a-b)化简
1/2(a+b)+1/2(a-b)
=1/2(a+b+a-b)
=1/2(2a)
=a