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受欢迎的初等代数 >

1\div 2\div 3\div 7

解答

1 \div 2 \div 3 \div 7

解答

\frac{1}{42}

+1

十进制

0.02380 \dots

求解步骤

1 \div 2 \div 3 \div 7

遵循 PEMDAS 运算顺序

乘除（左右）

1 \div 2 = \frac{1}{2}

= \frac{1}{2} \div 3 \div 7

\frac{1}{2} \div 3 = \frac{1}{6}

\frac{1}{2} \div 3

将项转换为分式:

3 = \frac{3}{1}

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

使用分式法则:

\frac{a}{b} \div \frac{c}{d} = \frac{a}{b} \times \frac{d}{c}

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

分式相乘:

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

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

数字相乘:

1 \cdot 1 = 1

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

数字相乘:

2 \cdot 3 = 6

= \frac{1}{6}

= \frac{1}{6} \div 7

\frac{1}{6} \div 7 = \frac{1}{42}

\frac{1}{6} \div 7

将项转换为分式:

7 = \frac{7}{1}

= \frac{1}{6} \div \frac{7}{1}

使用分式法则:

\frac{a}{b} \div \frac{c}{d} = \frac{a}{b} \times \frac{d}{c}

= \frac{1}{6} \cdot \frac{1}{7}

分式相乘:

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

= \frac{1 \cdot 1}{6 \cdot 7}

数字相乘:

1 \cdot 1 = 1

= \frac{1}{6 \cdot 7}

数字相乘:

6 \cdot 7 = 42

= \frac{1}{42}

= \frac{1}{42}

流行的例子

(25 + 3) (35 + 3)

5^{3} \cdot 2^{3}

(+8)+(+9)+(-9)+(-7)+(-4)

(+ 8) + (+ 9) + (- 9) + (- 7) + (- 4)

(-10)+(-29)+(-37)

(- 10) + (- 29) + (- 37)

4^3× 3^2+[23-(18-15)]

4^{3} \times 3^{2} + [23 - (18 - 15)]