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赵鑫 2022-08-16 18:11:33 +08:00
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问题/均贫富.md
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@ -8,7 +8,7 @@
$
\begin{aligned}
a - x &= b + x &(a \in \Bbb{N}, b \in \Bbb{N}, a>b) \\\\
a - x &= b + x &({a}\in\Bbb{N},{b}\in\Bbb{N},a>b) \\\\
2x &= a - b &(移项并交换等式两侧) \\\\
x &= \dfrac{a-b}{2} &(等式两侧同除以2)
\end{aligned}