展开 (8(3x-7))/5

解答

展开

\frac{8 ( 3 x - 7 )}{5}

\frac{24 x}{5} - \frac{56}{5}

求解步骤

\frac{8 ( 3 x - 7 )}{5}

乘开

8 (3 x - 7) : 24 x - 56

= \frac{24 x - 56}{5}

使用分式法则:

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

\frac{24 x - 56}{5} = \frac{24 x}{5} - \frac{56}{5}

= \frac{24 x}{5} - \frac{56}{5}

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