当x+y=5xy时,(3x+xy+3y)/x-2xy+y=?
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当x+y=5xy时,(3x+xy+3y)/x-2xy+y=?
![当x+y=5xy时,(3x+xy+3y)/x-2xy+y=?](/uploads/image/z/17964485-53-5.jpg?t=%E5%BD%93x%2By%3D5xy%E6%97%B6%2C%EF%BC%883x%2Bxy%2B3y%29%2Fx-2xy%2By%3D%3F)
x+y=5xy代入算式
(3x+xy+3y)/(x-2xy+y)
=[3(x+y)+xy]/[(x+y)-2xy]
=(15xy+xy)/(5xy-2xy)
=16/3
(3x+xy+3y)/(x-2xy+y)
=[3(x+y)+xy]/[(x+y)-2xy]
=(15xy+xy)/(5xy-2xy)
=16/3
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