\(\dfrac{3}{4}=\dfrac{3.3}{4.3}=\dfrac{9}{12}\)
Ta có :\(\dfrac{9}{12}>\dfrac{8}{12}\)
=>\(\dfrac{3}{4}>\dfrac{8}{12}\)
\(MSC:12\\ \dfrac{3}{4}=\dfrac{3\times3}{4\times3}=\dfrac{9}{12}\\ \dfrac{9}{12}>\dfrac{8}{12}\\ \Rightarrow\dfrac{3}{4}>\dfrac{8}{12}\)