\(\dfrac{1}{2}< \dfrac{2}{3}\\ \dfrac{2}{3}=\dfrac{8}{12}\)
ta có :
`1/2=(1xx3)/(2xx3)=3/6 ; 2/3=(2xx2)/(3xx2)=4/6`
`-> 1/2 < 2/3`
`---`
ta có :
`2/3=(2xx4)/(3xx4)=8/12;8/12`
`->2/3=8/12`
a)
`1/2=(1xx3)/(2xx3)=3/6`
`2/3=(2xx2)/(3xx2)=4/6`
vì 3<4 nên `3/6<4/6`
`=> 1/2<2/3`
b)
`8/12=(8:4)/(12:4)=2/3`
vì 2=2 nên `2/3=2/3`
`=> 2/3=8/12`
a) \(\dfrac{1}{3}< \dfrac{2}{3}\)
b) \(\dfrac{2}{3}=\dfrac{8}{12}\)