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受欢迎的初等代数 >

4-(5/9+44/9)

解答

4 - (\frac{5}{9} + \frac{44}{9})

解答

- \frac{13}{9}

+1

十进制

- 1.44444 \dots

求解步骤

4 - (\frac{5}{9} + \frac{44}{9})

遵循 PEMDAS 运算顺序

计算括号内的值

(\frac{5}{9} + \frac{44}{9}) : \frac{49}{9}

\frac{5}{9} + \frac{44}{9}

\frac{5}{9} + \frac{44}{9} = \frac{49}{9}

\frac{5}{9} + \frac{44}{9}

使用法则

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

= \frac{5 + 44}{9}

数字相加:

5 + 44 = 49

= \frac{49}{9}

= \frac{49}{9}

= 4 - \frac{49}{9}

加减（左右）

4 - \frac{49}{9} : - \frac{13}{9}

4 - \frac{49}{9}

4 - \frac{49}{9} = - \frac{13}{9}

4 - \frac{49}{9}

将项转换为分式:

4 = \frac{4 \cdot 9}{9}

= \frac{4 \cdot 9}{9} - \frac{49}{9}

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{4 \cdot 9 - 49}{9}

4 \cdot 9 - 49 = - 13

4 \cdot 9 - 49

数字相乘:

4 \cdot 9 = 36

= 36 - 49

数字相减:

36 - 49 = - 13

= - 13

= \frac{- 13}{9}

使用分式法则:

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

= - \frac{13}{9}

= - \frac{13}{9}

= - \frac{13}{9}

流行的例子

(10 - 3) (10 - 8)

+20-5(2-3)+3× (-7)

+ 20 - 5 (2 - 3) + 3 \times (- 7)

18+1/2 (3^3-(-5))

18 + \frac{1}{2} (3^{3} - (- 5))

2^{2} + 7

4 (8) + 3