\(\dfrac{212121}{232323}=\dfrac{212121:10101}{232323:10101}=\dfrac{21}{23}\)

\(\dfrac{123123}{124124}=\dfrac{123123:1001}{124124:1001}=\dfrac{123}{124}\)

Ta có: \(1-\dfrac{21}{23}=\dfrac{2}{23}\) ; \(1-\dfrac{123}{124}=\dfrac{1}{124}=\dfrac{2}{248}\)

\(=>\dfrac{2}{23}>\dfrac{2}{248}\)

\(=>1-\dfrac{21}{23}>1-\dfrac{123}{124}\)

\(=>\dfrac{21}{23}< \dfrac{123}{124}\)

\(=>\dfrac{212121}{232323}< \dfrac{123123}{124124}\)

bằng nhau nha bạn
chúc bạn học tốt

Ta có:\(\dfrac{2323}{9999}=\dfrac{23.101}{99.101}=\dfrac{23}{99}\)

         \(\dfrac{232323}{999999}=\dfrac{23.10101}{99.10101}=\dfrac{23}{99}\)

\(\Rightarrow\dfrac{2323}{9999}=\dfrac{232323}{999999}\)

\(\dfrac{2323}{9999}=\dfrac{232323}{999999}\)

2323/5656 = 23/56

232323/565656 = 23/56

Vậy 3 p/s bằng nhau

thanks

bạn làm rõ hơn cho mình nhé!

171717/232323 = 17.10101/23.10101 = 17/23 < 19/23

Rút gọn phân số ta có:

              171717 : 10101 = 17

              232323 : 10101 = 23

Và bằng 17/23 < 19/23.

rút gọn phân số 171717/232323 = 17/23.

vì 17/23 < 19/23 .

Vậy 171717/232323 <19/23

a) \(\dfrac{8}{9}< 1;\dfrac{13}{7}>1\Rightarrow\dfrac{8}{9}< \dfrac{13}{7}\)

b) \(\dfrac{16}{27}>\dfrac{15}{27}>\dfrac{15}{29}\Rightarrow\dfrac{16}{27}>\dfrac{15}{29}\)

a) 13/7

b) 15/29

c) \(\dfrac{181818}{232323}=\dfrac{18x10101}{23x10101}=\dfrac{18}{23}< \dfrac{19}{23}\Rightarrow\dfrac{19}{23}>\dfrac{181818}{232323}\)