(-3/4+8/15)/(1-(-3/4)(8/15))

解

\frac{- \frac{3}{4} + \frac{8}{15}}{1 - ( - \frac{3}{4} ) ( \frac{8}{15} )}

- \frac{13}{601 \frac{2}{5}}

十進法表記

- 0.05407 \dots

解答ステップ

\frac{- \frac{3}{4} + \frac{8}{15}}{1 - ( - \frac{3}{4} ) ( \frac{8}{15} )}

解く

- \frac{3}{4} + \frac{8}{15} : - \frac{13}{60}

解く

1 - (- \frac{3}{4}) (\frac{8}{15}) : 1 \frac{2}{5}

= \frac{- \frac{13}{60}}{1 \frac{2}{5}}

簡素化

\frac{- \frac{13}{60}}{1 \frac{2}{5}} : - \frac{13}{601 \frac{2}{5}}

= - \frac{13}{601 \frac{2}{5}}