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受欢迎的初等代数 >

化简-(2/8)/(-2)× 4

解答

化简

- \frac{\frac{2}{8}}{- 2} \cdot 4

解答

\frac{1}{2}

+1

十进制

0.5

求解步骤

- \frac{\frac{2}{8}}{- 2} \cdot 4

使用分式法则:

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

\frac{\frac{2}{8}}{- 2} = \frac{2}{8 ( - 2 )}

= - \frac{2}{8 ( - 2 )} \cdot 4

消掉

\frac{2}{8 ( - 2 )} : - \frac{1}{8}

\frac{2}{8 ( - 2 )}

去除括号:

8 (- 2) = - 8 \cdot 2

= \frac{2}{- 8 \cdot 2}

约分:

2

= \frac{1}{- 8}

使用分式法则:

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

= - \frac{1}{8}

= - (- \frac{1}{8}) \cdot 4

使用法则:

- (- a) = a

- (- \frac{1}{8}) = \frac{1}{8}

= \frac{1}{8} \cdot 4

\frac{1}{8} \cdot 4 = \frac{1}{2}

\frac{1}{8} \cdot 4

将项转换为分式:

4 = \frac{4}{1}

= \frac{1}{8} \cdot \frac{4}{1}

使用分式法则:

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

= \frac{1 \cdot 4}{8 \cdot 1}

\frac{1 \cdot 4}{8 \cdot 1} = \frac{1}{2}

\frac{1 \cdot 4}{8 \cdot 1}

\frac{1 \cdot 4}{8 \cdot 1} = \frac{4}{8}

\frac{1 \cdot 4}{8 \cdot 1}

数字相乘:

1 \cdot 4 = 4

= \frac{4}{8 \cdot 1}

数字相乘:

8 \cdot 1 = 8

= \frac{4}{8}

= \frac{4}{8}

对数字约分

\frac{4}{8} = \frac{1}{2}

= \frac{1}{2}

= \frac{1}{2}

= \frac{1}{2}

流行的例子