化简 15(1/56250000-1/225000000)

解答

化简

15 (\frac{1}{56250000} - \frac{1}{225000000})

\frac{1}{5000000}

十进制

0.0000002

求解步骤

15 (\frac{1}{56250000} - \frac{1}{225000000})

使用分配律:

a (b - c) = ab - a c

15 (\frac{1}{56250000} - \frac{1}{225000000}) = 15 \cdot \frac{1}{56250000} - 15 \cdot \frac{1}{225000000}

= 15 \cdot \frac{1}{56250000} - 15 \cdot \frac{1}{225000000}

15 \cdot \frac{1}{56250000} - 15 \cdot \frac{1}{225000000} = \frac{1}{5000000}

= \frac{1}{5000000}

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