解方程:(1-2/5)X(x-100)=x-110

问题描述:

解方程:(1-2/5)X(x-100)=x-110

(1-2/5)X(x-100)=x-110
0.6x-60=x-110
x-0.6x=110-60
0.4x=50
x=50÷0.4
x=125