化简 (100-(x+y)/2)x

解答

化简

(100 - \frac{x + y}{2}) x

\frac{( 200 - x - y ) x}{2}

求解步骤

(100 - \frac{x + y}{2}) x

合并

100 - \frac{x + y}{2} : \frac{200 - x - y}{2}

= \frac{200 - x - y}{2} x

使用分式法则:

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

= \frac{( 200 - x - y ) x}{2}

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