Anh nhớ anh có làm rồi mà
`4 3/4 : 1 19/24`
`= 19/4 : 43/24`
`=` `19/4. 24/43`
`=` `(19.24)/(4.43)`
`=` `114/43`
\(4\dfrac{3}{4} : 1\dfrac{19}{24}=\dfrac{19}{4} : \dfrac{43}{24}=\dfrac{19}{4} . \dfrac{24}{43}=\dfrac{114}{43}\)
\(=\dfrac{19}{4}:\dfrac{43}{24}=\dfrac{19}{4}\) \(\text{x}\) \(\dfrac{24}{43}=\dfrac{19.24}{4.43}=\dfrac{114}{43}\)