a)\(\dfrac{8}{15}< \dfrac{11}{15}< \dfrac{15}{15}< \dfrac{16}{15}< \dfrac{17}{15}< \dfrac{19}{15}\)

b)\(\dfrac{19}{42}< \dfrac{19}{35}< \dfrac{19}{21}< \dfrac{19}{19}< \dfrac{19}{17}\)

c)\(\dfrac{8}{10}< \dfrac{6}{7}< \dfrac{27}{25}< \dfrac{16}{14}\)

a) 8/15 ;  11/15 ; 15/15 ; 16/15 ; 17/15 ; 19/15

b) 19/42 19/35 ; 19/21 ; 19/19 ; 19/17

c) 8/10 ; 6/7 ; 27/25 ; 16/14

5/9;11/18;11/15;14/15

chac chan dung 100%

5/9;11/18;11/15;14/15
 

11 :11/15:3/5/9/14/15

Ai k mình,mình k lại

3/4,5/7,9/14

\(\dfrac{2}{3}< \dfrac{4}{5}< \dfrac{5}{6}< \dfrac{9}{10}< \dfrac{14}{15}\)

Tui có:      \(\frac{14}{17}=1-\frac{3}{17}\);   \(\frac{19}{22}=1-\frac{3}{22}\);  \(\frac{1999}{2002}=1-\frac{3}{2002}\)

Vì \(\frac{3}{5}>\frac{3}{17}>\frac{3}{22}>\frac{3}{2002}\)nên \(\frac{3}{5}

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

\(\dfrac{1}{3};\dfrac{1}{5};\dfrac{3}{10}=\dfrac{10}{30};\dfrac{6}{30};\dfrac{9}{30}\)

\(\dfrac{1}{2};\dfrac{11}{14};\dfrac{6}{7}\)

\(\dfrac{13}{15};\dfrac{5}{6};\dfrac{4}{5}\)

\(\dfrac{2}{3};\dfrac{3}{4};\dfrac{5}{6};\dfrac{11}{12}\)

Các phân số được sắp xếp theo thứ tự từ bé đến lớn: 5/7 ; 7/9 ; 9/11 ; 11/13