已知1/x+1/y=5,求(3x-5xy+3y)/(x+xy+y)的值?

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已知1/x+1/y=5,求(3x-5xy+3y)/(x+xy+y)的值?
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已知1/x+1/y=5,求(3x-5xy+3y)/(x+xy+y)的值?
已知1/x+1/y=5,求(3x-5xy+3y)/(x+xy+y)的值?

已知1/x+1/y=5,求(3x-5xy+3y)/(x+xy+y)的值?
1/x+1/y=5
(x+y)/xy=5
x+y=5xy
(3x-5xy+3y)/(x+xy+y)
=(15xy-5xy)/(5xy+xy)
=10/6
=5/3

1/x+1/y=5
(x+y)/xy=5
x+y=5xy
(3x-5xy+3y)/(x+xy+y)
=(15xy-5xy)/(5xy+xy)
=10/6
=5/3
祝你学习进步， 天天向上 、

5/3

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