⒈a－1分之a÷﹙a²－1分之a²－a﹚－﹙a－1分之1﹚

来源：学生作业学帮网编辑：学帮网时间：2024/05/26 19:00:55

原式=a/(a-1)×(a+1)(a-1)/a(a-1)-1/(a-1)
=a/(a-1)×(a+1)/a-1/(a-1)
=(a+1)/(a-1)-1/(a-1)
=(a+1-1)/(a-1)
=a/(a-1)

原式=a/(a-1)×(a+1)(a-1)/a(a-1) -1/(a-1)
=(a+1)/(a-1)-1/(a-1)
=a/(a-1)