化简 (7/(10(n+3)))/(\frac{n-2){(n+3)(n-2)}}

解答

化简

\frac{\frac{7}{10 ( n + 3 )}}{\frac{n - 2}{( n + 3 ) ( n - 2 )}}

\frac{7}{10}

十进制

0.7

求解步骤

\frac{\frac{7}{10 ( n + 3 )}}{\frac{n - 2}{( n + 3 ) ( n - 2 )}}

使用分式法则:

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

= \frac{7 ( n + 3 ) ( n - 2 )}{10 ( n + 3 ) ( n - 2 )}

约分:

n + 3

= \frac{7 ( n - 2 )}{10 ( n - 2 )}

约分:

n - 2

= \frac{7}{10}

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