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赵鑫 2022-08-12 20:05:13 +08:00
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问题/鸡兔同笼.md
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@ -28,7 +28,8 @@
解： 设鸡有$x$只, 兔有$y$只，则： 解： 设鸡有$x$只, 兔有$y$只，则：
$ \begin{cases}\begin{aligned}x+y=35\\ 2x+4y=94\end{aligned}\end{cases}$ $$ \begin{cases}\begin{aligned}x+y=35\\
2x+4y=94\end{aligned}\end{cases} $$
$ x = 35-y $ $ x = 35-y $