x/(12-8) + x/(12+8) = 14.4/60 怎么解
问题描述:
x/(12-8) + x/(12+8) = 14.4/60 怎么解
答
x/(12-8) + x/(12+8) = 14.4/60
x/4+x/20=14,4/60
5x+x=4.8
x=0.8
多谢!