(8000-x)除以(2400-x)=15 怎么解

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(8000-x)除以(2400-x)=15怎么解(8000-x)除以(2400-x)=15怎么解(8000-x)除以(2400-x)=15怎么解8000-x=15(2400-x)8000-x=3600

(8000-x)除以(2400-x)=15 怎么解
(8000-x)除以(2400-x)=15 怎么解

(8000-x)除以(2400-x)=15 怎么解
8000-x=15(2400-x)
8000-x=36000-15x
14x=36000-8000=28000
x=2000

两边乘以2400-x
8000-x=36000-15x
14x=28000
x=2000

8000-x=(2400-x)*15
15x-x=2400*15-8000
x=28000/14=2000

你怎么这么笨啊,自己慢慢算

8000-x=15(2400-x)
8000-x=36000-15x
-x+15x=36000-8000
14x=28000
x=28000/14