解方程:(x+100)/(x-100)=(3x+300)/(x+300)
问题描述:
解方程:(x+100)/(x-100)=(3x+300)/(x+300)
答
(x+100)/(x-100)=(3x+300)/(x+300)
x+300=3*(x-100)
2x=600
x=300