5/10= 1/2

12/36=1/3

9/72=1/8

\(\dfrac{5}{10}=\dfrac{1}{2}\);\(\dfrac{12}{36}=\dfrac{1}{3}\);\(\dfrac{9}{72}=\dfrac{1}{8}\);\(\dfrac{75}{300}=\dfrac{1}{4}\);\(\dfrac{15}{35}=\dfrac{3}{7}\);\(\dfrac{4}{100}=\dfrac{1}{25}\)

36/108=1/3

75/105=5/7

1212/3636=1/3

75/100=3/4

k cho minh nhe

a)

* Rút gọn : 21/56 = 3/8 ; 60/96 = 5/8

Vì 3 < 5 

=> 3/8 < 5/8 ( hay 21/56 < 60/96 )

Vậy 21/56 < 60/96

\(\text{a)}\)

\(\text{Ta có: }\text{ }\frac{21}{56}=\frac{21:7}{56:7}=\frac{3}{8}\text{ và }\frac{60}{96}=\frac{60:12}{96:12}=\frac{5}{8}\)

       \(\Rightarrow\frac{21}{56}< \frac{60}{96}\left(\frac{3}{8}< \frac{5}{8}\right)\)

\(\text{b)}\)

\(\text{Ta có: }\frac{75}{100}=\frac{75:25}{100:25}=\frac{3}{4}\text{ và }\frac{45}{36}=\frac{45:9}{36:9}=\frac{5}{4}\)    

       \(\Rightarrow\frac{75}{100}< \frac{45}{36}\left(\frac{3}{4}< \frac{5}{4}\right)\)

\(\text{# học tốt #}\)

thanks nha

3/2

13/12

1/4

3/7

\(\dfrac{24}{36}=\dfrac{2}{3}\\ \dfrac{143}{132}=\dfrac{13}{12}\\ \dfrac{25}{100}=\dfrac{1}{4}\\ \dfrac{45}{105}=\dfrac{3}{7}\)

\(\dfrac{24}{32}=\dfrac{24:8}{32:8}=\dfrac{3}{4}\)

\(\dfrac{75}{100}=\dfrac{75:25}{100:25}=\dfrac{3}{4}\)

\(\dfrac{45}{60}=\dfrac{45:15}{60:15}=\dfrac{3}{4}\)

\(\dfrac{27}{63}=\dfrac{27:9}{63:9}=\dfrac{3}{7}\)

\(\dfrac{24}{32}=\dfrac{24:8}{32:8}=\dfrac{3}{4}\)

\(\dfrac{45}{6}=\dfrac{45:3}{6:3}=\dfrac{15}{2}\)

\(\dfrac{75}{100}=\dfrac{75:25}{100:25}=\dfrac{3}{4}\)

\(\dfrac{27}{63}=\dfrac{27:9}{63:9}=\dfrac{3}{7}\)

`6/10=3/5`

`70/9=70/9`

`96/72=4/3`

`45/35=9/7`

`24/36=2/3`

`25/100=1/4`

$6/10=(6:2)/(10:2)=3/5$

$70/9$ ( tối giản)

$96/72=(96:24)/972:24)=4/3$

$45/35=(45:5)/(35:5)=9/7$

$24/36=(24:12)/(36:12)=2/3$

$25/100=(25:25)/(100:25)=1/4$

\(\dfrac{90}{120}=\dfrac{30.3}{30.4}=\dfrac{3}{4}\)

\(\dfrac{15}{25}=\dfrac{5.3}{5.5}=\dfrac{3}{5}\)

\(\dfrac{18}{45}=\dfrac{9.2}{9.5}=\dfrac{2}{5}\)

\(\dfrac{36}{64}=\dfrac{4.9}{4.16}=\dfrac{9}{16}\)

\(\dfrac{32}{72}=\dfrac{8.4}{8.9}=\dfrac{4}{9}\)

\(\dfrac{84}{49}=\dfrac{7.12}{7.7}=\dfrac{12}{7}\)

\(\dfrac{90}{120}=\dfrac{3}{4};\dfrac{15}{25}=\dfrac{3}{5};\dfrac{18}{45}=\dfrac{2}{5};\dfrac{36}{64}=\dfrac{9}{16};\dfrac{32}{72}=\dfrac{4}{9};\dfrac{84}{49}=\dfrac{12}{7}\)