Tính: \(\Large \dfrac{45}{63}\) \(\Large \dfrac{55}{36}\) \(\Large \df

Tính:

 

• A.

  \(\Large \dfrac{45}{63}\)

• B.

  \(\Large \dfrac{55}{36}\)

• C.

  \(\Large \dfrac{45}{36}\)

• D.

  \(\Large \dfrac{55}{63}\)

\(\Large \dfrac{3}{7} + \dfrac{4}{9} = \dfrac{27}{63} + \dfrac{28}{63} = \dfrac{55}{63}\)