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`
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