展开 (3(x+2))/5

解答

展开

\frac{3 ( x + 2 )}{5}

\frac{3 x}{5} + \frac{6}{5}

求解步骤

\frac{3 ( x + 2 )}{5}

乘开

3 (x + 2) : 3 x + 6

= \frac{3 x + 6}{5}

使用分式法则:

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

\frac{3 x + 6}{5} = \frac{3 x}{5} + \frac{6}{5}

= \frac{3 x}{5} + \frac{6}{5}

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