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