求这题分式化简,另外 ,怎么解分式和化简啊?

[1+1/(x-2)]÷（x+1)(x-1）/2(x-2)
=[1+1/(x-2)]×2（x-2）/(x+1)(x-1)
=2(x-2)/(x+1)(x-1)+2/(x+1)(x-1)
=2(x-1)/(x+1)(x-1)
=2/(x+1)
斜线代表分数线,斜线前面是分子,后面是分母,希望能帮到你