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受欢迎的初等代数 >

-180(1-5/50)

解答

- 180 (1 - \frac{5}{50})

解答

- 162

求解步骤

- 180 (1 - \frac{5}{50})

\frac{5}{50} = \frac{1}{10}

约分:

5

\frac{1}{10}

= - 180 (1 - \frac{1}{10})

遵循 PEMDAS 运算顺序

计算括号内的值

(1 - \frac{1}{10}) : \frac{9}{10}

1 - \frac{1}{10}

1 - \frac{1}{10} = \frac{9}{10}

1 - \frac{1}{10}

将项转换为分式:

1 = \frac{1 \cdot 10}{10}

= \frac{1 \cdot 10}{10} - \frac{1}{10}

因为分母相等，所以合并分式:

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

= \frac{1 \cdot 10 - 1}{10}

1 \cdot 10 - 1 = 9

1 \cdot 10 - 1

数字相乘:

1 \cdot 10 = 10

= 10 - 1

数字相减:

10 - 1 = 9

= 9

= \frac{9}{10}

= \frac{9}{10}

= - 180 \cdot \frac{9}{10}

乘除（左右）

- 180 \cdot \frac{9}{10} : - 162

- 180 \cdot \frac{9}{10}

将项转换为分式:

180 = \frac{180}{1}

= - \frac{180}{1} \cdot \frac{9}{10}

使用分式法则:

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

\frac{180}{1} \cdot \frac{9}{10} = \frac{180 \cdot 9}{1 \cdot 10}

= - \frac{180 \cdot 9}{1 \cdot 10}

消掉

\frac{180 \cdot 9}{1 \cdot 10} : 162

\frac{180 \cdot 9}{1 \cdot 10}

数字相乘:

1 \cdot 10 = 10

= \frac{180 \cdot 9}{10}

数字相除:

\frac{180}{10} = 18

= 18 \cdot 9

数字相乘:

18 \cdot 9 = 162

= 162

= - 162

= - 162

流行的例子

3^{2} - 4 (3) (- 10)

12 (- 3)^{2}

-4× 1\div 1000000

- 4 \times 1 \div 1000000

4 (\frac{9}{4} + \frac{5}{7} - 7)

1 4^{2} - 6^{2}