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@ -32,7 +32,4 @@
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解: 设鸡有$x$只, 兔有$y$只,则:
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解: 设鸡有$x$只, 兔有$y$只,则:
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$$ \begin{cases}
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$ \begin{cases}x+y=35\\2x+4y=94\end{cases} $
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x+y=35\\
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2x+4y=94
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\end{cases} $$
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