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受欢迎的初等代数 >

73/100*(-2/7)

解答

73/100 \cdot (- 2/7)

解答

- \frac{73}{350}

+1

十进制

- 0.20857 \dots

求解步骤

73/100 (- 2/7)

遵循 PEMDAS 运算顺序

计算括号内的值

(- 2/7) : \frac{- 2}{7}

- 2/7

- 2/7 = \frac{- 2}{7}

= \frac{- 2}{7}

= 73/100 \cdot \frac{- 2}{7}

乘除（左右）

73/100 \cdot \frac{- 2}{7} : - \frac{73}{350}

73/100 \cdot \frac{- 2}{7}

73/100 = \frac{73}{100}

= \frac{73}{100} \cdot \frac{- 2}{7}

\frac{73}{100} \cdot \frac{- 2}{7} = - \frac{73}{350}

\frac{73}{100} \cdot \frac{- 2}{7}

使用分式法则:

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

\frac{- 2}{7} = - \frac{2}{7}

= \frac{73}{100} (- \frac{2}{7})

使用法则:

a (- b) = - ab

\frac{73}{100} (- \frac{2}{7}) = - \frac{73}{100} \cdot \frac{2}{7}

= - \frac{73}{100} \cdot \frac{2}{7}

- \frac{73}{100} \cdot \frac{2}{7} = - \frac{73}{350}

- \frac{73}{100} \cdot \frac{2}{7}

使用分式法则:

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

\frac{73}{100} \cdot \frac{2}{7} = \frac{73 \cdot 2}{100 \cdot 7}

= - \frac{73 \cdot 2}{100 \cdot 7}

消掉

\frac{73 \cdot 2}{100 \cdot 7} : \frac{73}{350}

\frac{73 \cdot 2}{100 \cdot 7}

因式分解数字:

100 = 2 \cdot 50

= \frac{73 \cdot 2}{2 \cdot 50 \cdot 7}

约分:

2

= \frac{73}{50 \cdot 7}

数字相乘:

50 \cdot 7 = 350

= \frac{73}{350}

= - \frac{73}{350}

= - \frac{73}{350}

= - \frac{73}{350}

= - \frac{73}{350}

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