(8000-x)除以(2400-x)=15 怎么解
问题描述:
(8000-x)除以(2400-x)=15 怎么解
答
8000-x=(2400-x)*15
15x-x=2400*15-8000
x=28000/14=2000
答
你怎么这么笨啊,自己慢慢算
答
8000-x=15(2400-x)
8000-x=36000-15x
-x+15x=36000-8000
14x=28000
x=28000/14
答
两边乘以2400-x
8000-x=36000-15x
14x=28000
x=2000
答
8000-x=15(2400-x)
8000-x=36000-15x
14x=36000-8000=28000
x=2000