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RE: 能解出来的才是真大神！

in #cn • 6 years ago (edited)

谷歌一搜就可以呀

http://www.wolframalpha.com/input/?i=(702%2F(-390%2B858))%2B(-390%2F(702%2B858))%2B(858%2F(702%2B-390)
6 years ago in #cn by
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     6 years ago 

    不完全正常，要的是正整数解image.png

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