(300/x)/1.2=225/(x-5)
问题描述:
(300/x)/1.2=225/(x-5)
答
300/x.(x-5)=225*1.2 300-1500/x=270 1500/x=30 x=50
(300/x)/1.2=225/(x-5)
300/x.(x-5)=225*1.2 300-1500/x=270 1500/x=30 x=50