\(\dfrac{12}{7};\dfrac{3}{2}\)

12/7 , 3/2

12 / 7 , 3 / 2

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 : \(-\dfrac{3}{4};-\dfrac{7}{12};-\dfrac{5}{12};-\dfrac{1}{3};\dfrac{1}{-4}\)

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

\(\dfrac{1}{2}=\dfrac{1\cdot24}{2\cdot24}=\dfrac{24}{48}\)

\(\dfrac{3}{48}=\dfrac{3\cdot1}{48\cdot1}=\dfrac{3}{48}\)

\(\dfrac{8}{12}=\dfrac{8\cdot4}{12\cdot4}=\dfrac{32}{48}\)

\(\dfrac{5}{6}=\dfrac{5\cdot8}{6\cdot8}=\dfrac{40}{48}\)

\(\dfrac{7}{12}=\dfrac{7\cdot4}{12\cdot4}=\dfrac{28}{48}\)

mà 3<24<28<32<40

nên \(\dfrac{3}{48}< \dfrac{1}{2}< \dfrac{7}{12}< \dfrac{8}{12}< \dfrac{5}{6}\)

3/48,1/2;7/12;8/12;5/6

3/48, 1/2, 7/12, 8/12, 5/6
hk tốt

7/7 ; 1/7 ; 6/5; 5/2

1/7 ; 7/7 ; 6/5 ; 5/2

1/7 ; 7/7 ; 6/5 ; 5/2

\(\dfrac{12}{10}\);\(\dfrac{8}{10}\);\(\dfrac{2}{5}\);\(\dfrac{9}{45}\)

\(^{ }\dfrac{12}{10}\);\(\dfrac{8}{10}\);\(\dfrac{2}{5}\);\(\dfrac{9}{45}\)

12/10 ; 8/10 ; 2/5 ; 9/45

12/10 ; 8/10 ; 2/5 ; 9/45

8/10 -> 12/20 -> 2/5 -> 9/45

3/4   1/2   3/7

3/4 1/2