解方程. (x/x-5)-(4/x-5)=9
问题描述:
解方程. (x/x-5)-(4/x-5)=9
答
(x/x-5)-(4/x-5)=9
(x-4)/(x-5)=9
x-4=9x-45
8x=41
x=41/8