(1-3/5)X*18+3/5X*(18-10)=3000
问题描述:
(1-3/5)X*18+3/5X*(18-10)=3000
答
(1-3/5)X*18+3/5X*(18-10)=3000
同乘以5,得
36x+24x=15000
60x=15000
x=250