2/7 < 4/9

5/7 > 15/26

9/13 < 3/5

6/11 < 3/5

3/7 > 5/11

7/11 > 12/17

13/18 > 15/23

13/6 < 17/9

2/7 < 4/9

57 < 15/26

9/13 > 3/5

6/11 >3/5

7/11 < 12/17

13/18 < 15/23

13/6 < 17/9

\(a,MSC:195\\ \dfrac{7}{15}=\dfrac{7.13}{15.13}=\dfrac{91}{195}\\ \dfrac{5}{13}=\dfrac{5.15}{13.15}=\dfrac{75}{195}\\ b,MSC:48\\ \dfrac{11}{12}=\dfrac{11.4}{12.4}=\dfrac{44}{48}\)

Giữ nguyên \(\dfrac{7}{48}\)

\(c,MSC:30\\ \dfrac{3}{2}=\dfrac{3.15}{2.15}=\dfrac{45}{30}\\ \dfrac{2}{3}=\dfrac{2.10}{3.10}=\dfrac{20}{30}\\ \dfrac{7}{5}=\dfrac{7.6}{5.6}=\dfrac{42}{30}\\ d,MSC:75\\ \dfrac{5}{3}=\dfrac{25.5}{3.25}=\dfrac{125}{75}\\ \dfrac{15}{25}=\dfrac{15.3}{25.3}=\dfrac{45}{75}\)

\(\dfrac{7}{15}=\dfrac{7.13}{15.13}=\dfrac{91}{195};\dfrac{5}{13}=\dfrac{5.15}{13.15}=\dfrac{75}{195}\)

\(\dfrac{11}{12}=\dfrac{11.4}{12.4}=\dfrac{44}{48}\) ; giữ nguyên phân số còn lại

\(\dfrac{3}{2}=\dfrac{3.15}{2.15}=\dfrac{45}{30};\dfrac{2}{3}=\dfrac{2.10}{3.10}=\dfrac{20}{30};\dfrac{7}{5}=\dfrac{7.6}{5.6}=\dfrac{42}{30}\)

\(\dfrac{5}{3}=\dfrac{5.25}{3.25}=\dfrac{125}{75};\dfrac{15}{25}=\dfrac{15.3}{25.3}=\dfrac{45}{75}\)

5/7<7/6
17/13>45/52
4/3>99/100
34/56<42/53
97/252>85/163
73/97<91/95
 

5/7<7/6
17/13>45/52
4/3>99/100
34/56<42/53
97/252>85/163
73/97<91/95

ko có rảnh đâu nha con

1<

2>

3>

4<

5>

6<

30/80 và 40/80

27/30 và 13/30

35/60 và 44/60

20/30; 24/30 và 21/30 nhé

trả lời có phần chình bày đi

\(\dfrac{3}{8}và\dfrac{5}{10}=\dfrac{3\times5}{8\times5}=\dfrac{15}{40};\dfrac{5}{10}=\dfrac{5\times4}{10\times4}=\dfrac{20}{40}\)

\(\dfrac{9}{10}và\dfrac{13}{30}=\dfrac{9}{10}=\dfrac{9\times3}{10\times3}=\dfrac{27}{30};\dfrac{13}{30}\)

\(\dfrac{7}{12}và\dfrac{11}{15}=\dfrac{7}{12}=\dfrac{7\times5}{12\times5}=\dfrac{35}{60};\dfrac{11}{15}=\dfrac{11\times4}{15\times4}=\dfrac{44}{60}\)

\(\dfrac{2}{3};\dfrac{4}{5}và\dfrac{7}{10}=\dfrac{2}{3}=\dfrac{2\times10}{3\times10}=\dfrac{20}{30};\dfrac{4}{5}=\dfrac{4\times6}{5\times6}=\dfrac{24}{30};\dfrac{7}{10}=\dfrac{7\times3}{10\times3}=\dfrac{21}{30}\)

giúp mik với ạ!!!

Câu 2: B

Câu 3: B

Câu 4: A

\(\dfrac{7}{15}và\dfrac{5}{13}=\dfrac{7.13}{15.13}=\dfrac{91}{195};\dfrac{5}{13}=\dfrac{5.15}{13.15}=\dfrac{75}{195}\)

\(\dfrac{11}{12}và\dfrac{7}{48}=\dfrac{11.4}{12.4}=\dfrac{44}{48};\dfrac{7}{48}\)

\(\dfrac{24}{35}và\dfrac{21}{7}=\dfrac{24}{35};\dfrac{21}{7}=\dfrac{21.5}{7.5}=\dfrac{105}{35}\)

\(\dfrac{15}{16}và\dfrac{7}{8}=\dfrac{15}{16};\dfrac{7}{8}=\dfrac{7.2}{8.2}=\dfrac{14}{16}\)

Co j góc lệch cùng trời cuối đất cú mèo