初一化简分式化简(x-1)/x÷(x-1/x)
问题描述：
初一化简分式
化简(x-1)/x÷(x-1/x)
答
1 (X不为0)
答
x-1/x=(x平方-1)/x=(x+1）（x-1）/x
(x-1)/x÷(x-1/x) =(x-1)/x÷=1/(x+1)
答
(x-1)/x÷(x-1/x)
=(x-1)/x/(x^2-1)*x
=(x-1)/(x^2-1)
=1/(x+1)