若x+y=5xy,则(2x+2y-3xy)/(2xy+x+y)=? 急急急 快快快!
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若x+y=5xy,则(2x+2y-3xy)/(2xy+x+y)=? 急急急 快快快!
![若x+y=5xy,则(2x+2y-3xy)/(2xy+x+y)=? 急急急 快快快!](/uploads/image/z/10973866-58-6.jpg?t=%E8%8B%A5x%2By%3D5xy%2C%E5%88%99%282x%2B2y-3xy%29%2F%282xy%2Bx%2By%29%3D%3F+%E6%80%A5%E6%80%A5%E6%80%A5+%E5%BF%AB%E5%BF%AB%E5%BF%AB%21)
(2x+2y-3xy)/(2xy+x+y)
=[2(x+y)-3xy]/[(x+y)+2xy]
=(10xy-3xy)/(5xy+2xy)
=7xy/7xy
=1
如果本题有什么不明白可以追问,
=[2(x+y)-3xy]/[(x+y)+2xy]
=(10xy-3xy)/(5xy+2xy)
=7xy/7xy
=1
如果本题有什么不明白可以追问,
若x+y=5xy,则(2x+2y-3xy)/(2xy+x+y)=? 急急急 快快快!
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