So sánh hai phân số khác mẫu số

\(\dfrac{11}{20};\dfrac{6}{8}=\dfrac{3}{4}=\dfrac{3\times5}{4\times5}=\dfrac{15}{20}\)

Vì \(\dfrac{11}{20}< \dfrac{15}{20}\rightarrow\dfrac{11}{20}< \dfrac{6}{8}\)

\(\dfrac{20}{50}=\dfrac{2}{5};\dfrac{1}{5}\)

Vì \(\dfrac{2}{5}>\dfrac{1}{5}\rightarrow\dfrac{20}{50}>\dfrac{1}{5}\)

11/20<15/20→11/20<6/8

2/5>1/5=>20/50>1/5

11/20<15/20

20/50>1/5

>    >

> ; >

> ; > nha

tich cho mik nhe

16/48=1/3

34/51=2/3

Vì: 2>1 nên: 1/3<2/3

=>16/48<34/51

Vậy:16/48<34/51 

16/48=1/3

34/51=2/3

mà 1/3<2/3

nên 16/48<34/51

\(\dfrac{16}{48}=\dfrac{1}{3}\)

\(\dfrac{34}{51}=\dfrac{2}{3}\)

Vì 2>1 nên \(\dfrac{1}{3}< \dfrac{2}{3}\)

\(=>\dfrac{16}{48}< \dfrac{34}{51}\)

Vậy \(\dfrac{16}{48}< \dfrac{34}{51}\)

Chúc bạn học tốt

92/37+11/37=103/37

23/24+1/4=23/24+6/24=29/24

mà 103/37>29/24

nên 92/37+11/37>23/24+1/4

5 phần = 5 = \(\dfrac{5}{} \) :>

b

trả lời hộ tớ

\(\dfrac{1}{2};\dfrac{4}{5};\dfrac{3}{6};\dfrac{9}{2};\dfrac{11}{2}\)

\(\dfrac{1}{2}=\dfrac{15}{30};\dfrac{4}{5}=\dfrac{24}{30};\dfrac{3}{6}=\dfrac{15}{30};\dfrac{9}{2}=\dfrac{135}{30};\dfrac{11}{2}=\dfrac{165}{30}\)

Phân số lớn nhất là : \(\dfrac{165}{30}hay\dfrac{11}{2}\)

232323/434343=23/43=161/301

6/7=258/301

mà 161<258

nên 232323/434343<6/7

\(\dfrac{5}{10}=\dfrac{1}{2}< 1;\dfrac{76898}{65334}>1\\ \Rightarrow\dfrac{76898}{65334}>\dfrac{5}{10}\)

5/10

\(\dfrac{7537}{4345677}< 1\\ \dfrac{56}{10}>1\\ \Rightarrow\dfrac{7537}{4345677}< \dfrac{56}{10}\)

\(\dfrac{7537}{4345677}< 1;\dfrac{56}{10}>1\\ \Rightarrow\dfrac{56}{10}>\dfrac{7537}{4345677}\)

<

\(\dfrac{65}{5}=13;24< \dfrac{5678}{234}< 25;\dfrac{456789}{5}=91357,8\)

Do đó: \(1< \dfrac{65}{5}< \dfrac{5678}{234}< \dfrac{456789}{5}\left(1\right)\)

\(\dfrac{6}{7}=\dfrac{6\cdot9}{7\cdot9}=\dfrac{54}{63};\dfrac{5}{9}=\dfrac{5\cdot7}{9\cdot7}=\dfrac{35}{63}\)

mà 54>35

nên \(1>\dfrac{6}{7}>\dfrac{5}{9}\)(2)

Từ (1),(2) suy ra \(\dfrac{5}{9}< \dfrac{6}{7}< \dfrac{65}{5}< \dfrac{5678}{234}< \dfrac{456789}{5}\)