Bài 3: Tính: C, 13/-8 - 7/12 - (-15)/4 Giúp mình với nha......,

2 câu trả lời

$\frac{13}{-8}$ - $\frac{7}{12}$ - $\frac{(-15)}{4}$

= $\frac{-13}{8}$ - $\frac{7}{12}$ + $\frac{15}{4}$

= $\frac{-39}{24}$ - $\frac{14}{24}$ + $\frac{90}{24}$

= $\frac{37}{24}$ 

$\text{$\dfrac{13}{-8}$ - $\dfrac{7}{12}$ - $\dfrac{-150}{4}$}$

$\text{= $\dfrac{-13}{8}$ - $\dfrac{7}{12}$ - $\dfrac{-150}{4}$}$

$\text{= $\dfrac{-13.3}{8.3}$ - $\dfrac{7.2}{12.2}$ - $\dfrac{-150.6}{4.6}$}$

$\text{= $\dfrac{-39}{24}$ - $\dfrac{14}{24}$ - $\dfrac{-900}{24}$}$

$\text{= $\dfrac{-53}{24}$ - $\dfrac{-900}{24}$}$

$\text{= $\dfrac{847}{24}$}$

$\text{Chúc bạn học tốt!}$

`@huyenlynh`