解方程x/x-1 - x-1/x-2 =x-3/x-4 - x-4/x-5
问题描述:
解方程x/x-1 - x-1/x-2 =x-3/x-4 - x-4/x-5
【1+1/(x-1)】-【1+1/(x-2)】=【1+1/(x-4)】【1+1/(x-5)】这步怎么来的?
答
【(x-1+1)/((x-1)】-【(x-2+1)/(x-2)】=【(x-4+1)/(x-4)】-【(x-5+1)/(x-5)】里面都分下来就是上面的了,不过你上面好像后面少了一个减号