若4x-3y=0且x≠0,y≠0,则4x−5y4x+5y的值为( )
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若4x-3y=0且x≠0,y≠0,则
4x−5y |
4x+5y |
![若4x-3y=0且x≠0,y≠0,则4x−5y4x+5y的值为( )](/uploads/image/z/2160109-37-9.jpg?t=%E8%8B%A54x-3y%3D0%E4%B8%94x%E2%89%A00%EF%BC%8Cy%E2%89%A00%EF%BC%8C%E5%88%994x%E2%88%925y4x%2B5y%E7%9A%84%E5%80%BC%E4%B8%BA%EF%BC%88%E3%80%80%E3%80%80%EF%BC%89)
由4x-3y=0,得4x=3y,
∴
4x−5y
4x+5y=
3y−5y
3y+5y=
−2y
8y=−
1
4.
故选C.
∴
4x−5y
4x+5y=
3y−5y
3y+5y=
−2y
8y=−
1
4.
故选C.
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