quy đồng có
`1/2=30/60`
`4/3=80/60`
`5/5=1/1=60/60`
`3/4=45/60`
vì `30<45<60<80`
`=>1/2<3/4<5/5<4/3`
Ta có :
`1/2=(1xx2)/(2xx2)=2/4`
Vì `2/4<3/4<5/5<4/3`
Vây `1/2<3/4<5/5<4/3`
Ta có :
`1/2=(1xx30)/(2xx30)= 30/60`
`4/3=(4xx20)/(3xx20)=80/60`
`5/5=1/1=(1xx60)/(1xx60)= 60/60`
`3/4=(3xx15)/(4xx15)= 45/60`
`->1/2;3/4;5/5;4/3`