\(\frac{3}{4}\)= \(\frac{3\times9}{4\times9}\)= \(\frac{27}{36}\).
\(\frac{4}{9}\)= \(\frac{4\times4}{9\times4}\)= \(\frac{16}{36}\).
\(\frac{5}{18}\)= \(\frac{5\times2}{18\times2}\)= \(\frac{10}{36}\).
3/4=27/36
4/9=14/36
5/18=10/36
k cho mình nha bạn