19 lines
340 B
Markdown
19 lines
340 B
Markdown
# 均贫富
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```
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明明的邮票：============================= 29
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小强的邮票：========= 9
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```
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$ a - x = b + x \space (a \in \mathbb{N}, b \in \mathbb{N}, a>b) $
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## 解法1
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$ 2x = a - b \space (移项并交换等式两侧)$
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$ x=\frac{a-b}{2} \space (等式两侧同除以2)$
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## 解法2
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$x=\frac{a+b}{2}-b$
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