Question

quy đồng mẫu các phân số 

5/12, -11/15, 49/-60

Answer 1

`5/12=(5xx5)/(12xx5)=25/60`

`(-11)/15=(-11xx4)/(15xx4)=(-44)/60`

`49/(-60)=(-49)/60`

Answer 2

MSC: 60

\(\dfrac{5}{12}=\dfrac{5.5}{12.5}=\dfrac{25}{60}\) 

\(\dfrac{-11}{15}=\dfrac{-11.4}{15.4}=\dfrac{-44}{60}\) 

\(\dfrac{49}{-60}=\dfrac{-49}{60}\)