簡約 86148.9(1-2/10)^1

解

簡約

86148.9 (1 - \frac{2}{10})^{1}

\frac{1722978}{25}

十進法表記

68919.12

解答ステップ

86148.9 (1 - \frac{2}{10})^{1}

指数の規則を適用する:

a^{1} = a

(1 - \frac{2}{10})^{1} = 1 - \frac{2}{10}

= 86148.9 (1 - \frac{2}{10})

1 - \frac{2}{10} = \frac{4}{5}

= 86148.9 \cdot \frac{4}{5}

86148.9 = \frac{861489}{10}

= \frac{861489}{10} \cdot \frac{4}{5}

\frac{861489}{10} \cdot \frac{4}{5} = \frac{1722978}{25}

= \frac{1722978}{25}