化简 2(1+(2k)/n)

解答

化简

2 (1 + \frac{2 k}{n})

\frac{2 ( n + 2 k )}{n}

求解步骤

2 (1 + \frac{2 k}{n})

合并

1 + \frac{2 k}{n} : \frac{n + 2 k}{n}

= 2 \cdot \frac{n + 2 k}{n}

使用分式法则:

a \cdot \frac{b}{c} = \frac{a \cdot b}{c}

= \frac{2 ( n + 2 k )}{n}

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