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受欢迎的初等代数 >

5/4 × (1-2/3)

解答

\frac{5}{4} \cdot (1 - \frac{2}{3})

解答

\frac{5}{12}

+1

十进制

0.41666 \dots

求解步骤

\frac{5}{4} (1 - \frac{2}{3})

遵循 PEMDAS 运算顺序

计算括号内的值

(1 - \frac{2}{3}) : \frac{1}{3}

1 - \frac{2}{3}

1 - \frac{2}{3} = \frac{1}{3}

1 - \frac{2}{3}

将项转换为分式:

1 = \frac{1 \cdot 3}{3}

= \frac{1 \cdot 3}{3} - \frac{2}{3}

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 3 - 2}{3}

1 \cdot 3 - 2 = 1

1 \cdot 3 - 2

数字相乘:

1 \cdot 3 = 3

= 3 - 2

数字相减:

3 - 2 = 1

= 1

= \frac{1}{3}

= \frac{1}{3}

= \frac{5}{4} \cdot \frac{1}{3}

乘除（左右）

\frac{5}{4} \cdot \frac{1}{3} : \frac{5}{12}

\frac{5}{4} \cdot \frac{1}{3}

使用分式法则:

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

= \frac{5 \cdot 1}{4 \cdot 3}

数字相乘:

5 \cdot 1 = 5

= \frac{5}{4 \cdot 3}

数字相乘:

4 \cdot 3 = 12

= \frac{5}{12}

= \frac{5}{12}

流行的例子

2^{2} + 9 (2) - 5

16 \div 8 \times 2 + 7

(3 \times 7)^{2}

(12+4)\div (11-7)

(12 + 4) \div (11 - 7)

2 (7)^{4}