1/2=3/6
2/3=4/6
=>1/2<2/3
=>2/3 lớn hơn
MSCNN là : 6
1/2 x 3 = 3/6
2/3 x 2 = 4/6
3/6 < 4/6 thì 1/2 < 2/3 nên 2/3 lớn hơn
ta có :
`1/2= (1xx3)/(2xx3)=3/6`
`2/3=(2xx2)/(3xx2)=4/6`
mà `3/6 < 4/6=>1/2<2/3`
nên `2/3` lớn hơn
\(\dfrac{1}{2}=\dfrac{3}{6};\dfrac{2}{3}=\dfrac{4}{6}\)
\(\Rightarrow\dfrac{3}{6}< \dfrac{4}{6}\Rightarrow\dfrac{1}{2}< \dfrac{2}{3}\)