化简 (2/9)/((-6/5))

解答

化简

\frac{\frac{2}{9}}{( - \frac{6}{5} )}

- \frac{5}{27}

十进制

- 0.18518 \dots

求解步骤

\frac{\frac{2}{9}}{- \frac{6}{5}}

使用分式法则:

\frac{a}{- b} = - \frac{a}{b}

= - \frac{\frac{2}{9}}{\frac{6}{5}}

使用分式法则:

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

\frac{\frac{2}{9}}{\frac{6}{5}} = \frac{2 \cdot 5}{9 \cdot 6}

= - \frac{2 \cdot 5}{9 \cdot 6}

消掉

- \frac{2 \cdot 5}{9 \cdot 6} : - \frac{5}{27}

= - \frac{5}{27}

s im pl i f y 56 (23)

s im pl i f y \frac{19}{8398748} \cdot 1000000

s im pl i f y (y^{4})^{\frac{1}{4}}

v^{2} - 3 v - 28 = 0

4 r - 5 = - \frac{1}{2} - 4 (r + 1)