化简 (250-x/(20))x

解答

化简

(250 - \frac{x}{20}) x

\frac{( 5000 - x ) x}{20}

求解步骤

(250 - \frac{x}{20}) x

合并

250 - \frac{x}{20} : \frac{5000 - x}{20}

= \frac{5000 - x}{20} x

使用分式法则:

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

= \frac{( 5000 - x ) x}{20}

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