Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
a: 2/3=1-1/3
5/6=1-1/6
3/4=1-1/4
1/3>1/4>1/6
=>-1/3<-1/4<-1/6
=>2/3<3/4<5/6
b: 7/15=21/45
5/3=75/45
24/45=24/45
mà 21<24<75
nên 7/15<24/45<5/3
Ta co : 5/6=50/60 ; 1/2=30/60 ; 2/3=40/60 ; 4/5=48/60
Vi 30/60<40/60<48/60<50/60 hay 1/2<2/3<4/5<5/6
nen sap ep cac phan so theo thu tu tu be den lon la :
1/2 ; 2/3 ; 4/5 ; 5/6 .
Ta có:
\(\dfrac{6}{5}=\dfrac{6\times168}{5\times168}=\dfrac{1008}{840}\) ; \(\dfrac{3}{4}=\dfrac{3\times210}{4\times210}=\dfrac{630}{840}\) ; \(\dfrac{9}{8}=\dfrac{9\times105}{8\times105}=\dfrac{945}{840}\)
\(\dfrac{1}{7}=\dfrac{1\times120}{7\times120}=\dfrac{120}{840}\) ; \(\dfrac{2}{3}=\dfrac{2\times280}{3\times280}=\dfrac{560}{840}\)
⇒ \(\dfrac{120}{840}< \dfrac{560}{840}< \dfrac{630}{840}< \dfrac{945}{840}< \dfrac{1008}{840}\) ⇒ \(\dfrac{1}{7}< \dfrac{2}{3}< \)\(\dfrac{3}{4}< \dfrac{9}{8}< \dfrac{6}{5}\)
=> 5/6; 4/5; 2/3; 7/12; 1/2
1/2 ; 4/5 ; 2/3 ; 5/6 ; 7/12
Khi quy đồng ta có: 30/60; 48/60; 40/60; 50/60; 35/60
\(\dfrac{2}{3}< \dfrac{4}{5}< \dfrac{5}{6}< \dfrac{9}{10}< \dfrac{14}{15}\)
Thank you