a: 17/200>17/314

b: 11/54=22/108<22/37

c: 141/893=3/19

159/901=3/17

mà 3/19<3/17

nên 141/893<159/901

a)17/200>17/314

b)11/54=22/108<22/37

c)141/893=3/19;159/901=3/17 nên 141/893<159/901

Kết bn với mik nha!

Bài 52 :

a) 14/21 = 2/3 và 60/72 = 5/6

Vì 2/3 = 4/6 < 5/6 nên 2/3 < 5/6

Bài 53 :

a) Vì 200 < 314 nên 17/200 > 17/314

b) Ta có 11/54 < 11/37 < 22/37 nên 11/54 < 22/37

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a: 200<314

=>1/200>1/314

=>17/200>17/314

b: 11/54=22/108

37<108

=>22/37>22/108

=>22/37>11/54

c: 141/893=3/19

159/901=3/17

mà 3/19<3/17

nên 141/893<159/901

d: 9/382=18/764=90/3820

6/257=18/771=90/3855

15/643=90/3858

3820<3855<3858

=>90/3820>90/3855>90/3858

=>9/382>6/257>15/643

a: 200<314

=>1/200>1/314

=>17/200>17/314

b: 11/54=22/108

37<108

=>22/37>22/108

=>22/37>11/54

c: 141/893=3/19

159/901=3/17

mà 3/19<3/17

nên 141/893<159/901

d: 9/382=18/764=90/3820

6/257=18/771=90/3855

15/643=90/3858

3820<3855<3858

=>90/3820>90/3855>90/3858

=>9/382>6/257>15/643

17/200>17/314

11/54<22/37

141/893<159/901

17/200>17/314

11/54<22/37

141/893<159/901

a)=

b)>

c)=

a: \(\dfrac{5}{7}=\dfrac{5\cdot11}{7\cdot11}=\dfrac{55}{77}\)

\(\dfrac{9}{11}=\dfrac{9\cdot7}{11\cdot7}=\dfrac{63}{77}\)

b: \(\dfrac{36}{42}=\dfrac{6}{7}=\dfrac{6\cdot9}{7\cdot9}=\dfrac{54}{63}\)

\(-\dfrac{12}{54}=\dfrac{-2}{9}=\dfrac{-2\cdot7}{9\cdot7}=-\dfrac{14}{63}\)

c: \(\dfrac{-11}{30}=\dfrac{-11\cdot4}{30\cdot4}=\dfrac{-44}{120}\)

\(\dfrac{-17}{-40}=\dfrac{17}{40}=\dfrac{17\cdot3}{40\cdot3}=\dfrac{51}{120}\)

d: \(\dfrac{36}{42}=\dfrac{6}{7}=\dfrac{6\cdot3}{7\cdot3}=\dfrac{18}{21}\)

\(\dfrac{-12}{36}=\dfrac{-1}{3}=\dfrac{-1\cdot7}{3\cdot7}=\dfrac{-7}{21}\)

\(\dfrac{47}{95}\) và \(\dfrac{35}{69}\)

\(\dfrac{47}{95}< \dfrac{1}{2}\) và \(\dfrac{35}{69}>\dfrac{1}{2}\)

Vậy \(\dfrac{47}{95}< \dfrac{35}{69}\)

\(\dfrac{53}{103}\) và \(\dfrac{71}{145}\)

\(\dfrac{53}{103}>\dfrac{1}{2}\) và \(\dfrac{71}{145}< \dfrac{1}{2}\)

Vậy \(\dfrac{53}{103}>\dfrac{71}{145}\)

\(\dfrac{2009}{2010}\) và \(\dfrac{2005}{2006}\)

\(1-\dfrac{2009}{2010}=\dfrac{1}{2010}\) và \(1-\dfrac{2005}{2006}=\dfrac{1}{2006}\)

Vậy \(\dfrac{2009}{2010}>\dfrac{2005}{2006}\)

\(\dfrac{783}{901}\) và \(\dfrac{738}{915}\)

\(\dfrac{738}{915}< \dfrac{783}{915}< \dfrac{783}{901}\)

Vậy \(\dfrac{783}{901}>\dfrac{738}{915}\)

nhanh giúp mình với ạ

cảm ơn bạn nhiều

a) `14/21=(14:7)/(21:7)=2/3=4/6`

`60/72=(60:12)/(72:12)=5/6`

Vì `4/6 <5/6`

`=> 14/21 < 60/72`

b) `22/37 = (22:2)/(37:2)= 11/(37/2)`

Vì `54 > 37/2`

`=> 11/54 < 22/37`