1)\(\dfrac{8}{12}\)=\(\dfrac{2}{3}\) \(\dfrac{20}{25}\)=\(\dfrac{4}{5}\) \(\dfrac{18}{36}\)= \(\dfrac{1}{2}\)
2) phân số thập phân là \(\dfrac{2}{20}\)=\(\dfrac{1}{10}\) ., \(\dfrac{7}{10}\) ., \(\dfrac{69}{100}\)
3)\(\dfrac{4}{7}\)<\(\dfrac{7}{4}\) , \(\dfrac{13}{14}\) >\(\dfrac{13}{15}\) , \(\dfrac{11}{12}\)=\(\dfrac{9}{10}\)

4 và 5