展开 (5(y+3))/3

解答

展开

\frac{5 ( y + 3 )}{3}

\frac{5 y}{3} + 5

求解步骤

\frac{5 ( y + 3 )}{3}

乘开

5 (y + 3) : 5 y + 15

= \frac{5 y + 15}{3}

使用分式法则:

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

\frac{5 y + 15}{3} = \frac{5 y}{3} + \frac{15}{3}

= \frac{5 y}{3} + \frac{15}{3}

数字相除:

\frac{15}{3} = 5

= \frac{5 y}{3} + 5

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