(1/4X+15):(1-1/4X-15)=2:3 4分之1乘X加15比1-4分之1乘X-15=2:3

问题描述:

(1/4X+15):(1-1/4X-15)=2:3
4分之1乘X加15比1-4分之1乘X-15=2:3

(1/4X+15):(1-1/4X-15)=2:3 可转化为3*(1/4X+15)=2*(1-1/4X-15)
展开得:3/4X+45=-2/4X-28
移向合并得:5/4X=-73
得x= - 292/5