a, 9; 7; 5; 2

b, 1; 6; 4; 8

a) 9, 7, 5 2

b) 1, 4, 6, 8

a. 9-7-5-2

b. 1-4-6-8

a) \(\dfrac{2}{3}=\dfrac{4}{6}\)

\(\dfrac{5}{6}=\dfrac{5}{6}\)

Do đó: \(\dfrac{2}{3}< \dfrac{5}{6}\)

mà \(\dfrac{5}{6}< 1< \dfrac{8}{7}\)

nên \(\dfrac{2}{3}< \dfrac{5}{6}< \dfrac{8}{7}\)

a: -10/8<-1

-19/19=-1

-1<-2/10<0

0<5/12<1<17/15

=>17/15>1>5/12>-2/10>-19/19>-10/8

b: -1/3=-4/12; -5/12=-5/12; -3/4=-9/12; -1/4=-3/12; -7/12=-7/12

=>-3/4<-7/12<-5/12<-1/3<-1/4

Theo thứ tự từ lớn đến bé:\(\dfrac{17}{15};1;\dfrac{5}{12};0;\dfrac{2}{-10};-\dfrac{19}{19};-\dfrac{10}{8}\)

Theo thứ tự từ bé đến lớn : \(-\dfrac{3}{4};-\dfrac{7}{12};-\dfrac{5}{12};-\dfrac{1}{3};\dfrac{1}{-4}\)

\(\dfrac{8}{3};\dfrac{7}{7};\dfrac{6}{7};\dfrac{1}{2};\dfrac{3}{8}\)

\(\dfrac{8}{3}\);\(\dfrac{7}{7}\);\(\dfrac{6}{7}\);\(\dfrac{1}{2}\);\(\dfrac{3}{8}\)

chúc bạn học tốt

\(6.54,6.2,3.5,3.28\)

6,54 ; 6,2 ; 3,5 ; 3,28

6.54,6.2,3.5,3.28

2/7 ; 6/7 ; 1 ; 8/5 ; 2 ; 8/3

Ta có : \(\dfrac{4}{5}< 1\) ; \(\dfrac{4}{7}< 1\) \((\) vì có cùng tử số mà mẫu số lớn hơn thì bé hơn \()\)

\(\dfrac{2}{1}=2;\dfrac{6}{2}=3;\dfrac{9}{8}>1;\dfrac{8}{5}>1\)

\(\Rightarrow\) thứ tự từ bé đến lớn:\(\dfrac{4}{7};\dfrac{4}{5};\dfrac{9}{8};\dfrac{8}{5};\dfrac{2}{1};\dfrac{6}{2}\)

\(#Vy\)

SOS

\(\dfrac{6}{2}\) ; \(\dfrac{2}{1}\) ; \(\dfrac{8}{5}\) ; \(\dfrac{9}{8}\);\(\dfrac{4}{5}\);\(\dfrac{4}{7}\)

\(@Vy\)

\(\dfrac{6}{2},\dfrac{2}{1},\dfrac{8}{5},\dfrac{9}{8},\dfrac{4}{5},\dfrac{4}{7}\)