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受欢迎的初等代数 >

-180(1-10/50)

解答

- 180 (1 - \frac{10}{50})

解答

- 144

求解步骤

- 180 (1 - \frac{10}{50})

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

约分:

10

\frac{1}{5}

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

遵循 PEMDAS 运算顺序

计算括号内的值

(1 - \frac{1}{5}) : \frac{4}{5}

1 - \frac{1}{5}

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

1 - \frac{1}{5}

将项转换为分式:

1 = \frac{1 \cdot 5}{5}

= \frac{1 \cdot 5}{5} - \frac{1}{5}

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 5 - 1}{5}

1 \cdot 5 - 1 = 4

1 \cdot 5 - 1

数字相乘:

1 \cdot 5 = 5

= 5 - 1

数字相减:

5 - 1 = 4

= 4

= \frac{4}{5}

= \frac{4}{5}

= - 180 \cdot \frac{4}{5}

乘除（左右）

- 180 \cdot \frac{4}{5} : - 144

- 180 \cdot \frac{4}{5}

将项转换为分式:

180 = \frac{180}{1}

= - \frac{180}{1} \cdot \frac{4}{5}

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{4}{5} = \frac{180 \cdot 4}{1 \cdot 5}

= - \frac{180 \cdot 4}{1 \cdot 5}

消掉

\frac{180 \cdot 4}{1 \cdot 5} : 144

\frac{180 \cdot 4}{1 \cdot 5}

数字相乘:

1 \cdot 5 = 5

= \frac{180 \cdot 4}{5}

数字相除:

\frac{180}{5} = 36

= 36 \cdot 4

数字相乘:

36 \cdot 4 = 144

= 144

= - 144

= - 144

流行的例子

6× 7\div (6-4)-6

6 \times 7 \div (6 - 4) - 6

5 (1) - 1

4^{3} - 3 (4)

30-8× 3+12\div 4

30 - 8 \times 3 + 12 \div 4

2 (4)^{2} - 5 (4) - 3