\(\dfrac{3131}{3535}=\dfrac{31}{35}\)

\(\dfrac{204204}{217217}=\dfrac{204}{217}\)

\(\dfrac{414414}{494949}=\dfrac{1518}{1813}\)

\(\dfrac{171171171}{180180180}=\dfrac{19}{20}\)

\(\dfrac{3131}{3535}=\dfrac{31}{35}\)

\(\dfrac{204204}{217217}=\dfrac{204}{217}\)

\(\dfrac{414414}{494949}=\dfrac{1518}{1813}\)

\(\dfrac{171171171}{180180180}=\dfrac{19}{20}\)

3131/3535 = 31/35

204204/217217 = 204/217

414414/494949 = 414/494

171171171/180180180 =171/180

a) \(\frac{6}{9}=\frac{6:3}{9:3}=\frac{2}{3}\)

b)\(\frac{10}{48}=\frac{10:2}{48:2}=\frac{5}{24}\)

c)\(\frac{72}{84}=\frac{72:12}{84:12}=\frac{6}{7}\)

d)\(\frac{1212}{3939}=\frac{1212:303}{3939:303}=\frac{4}{13}\)

#H

Rút gọn phân số:

\(\frac{6}{9}=\frac{6\div3}{9\div3}=\frac{2}{3}\)

\(\frac{10}{48}=\frac{10\div2}{48\div2}=\frac{5}{24}\)

\(\frac{72}{84}=\frac{72\div12}{84\div12}=\frac{6}{7}\)

\(\frac{1212}{3939}=\frac{1212\div303}{3939\div303}=\frac{4}{13}\)

\(\frac{3131}{3535}=\frac{3131:101}{3535:101}=\frac{31}{35}\)

\(\frac{204204}{217217}=\frac{204204:1001}{217217:1001}=\frac{204}{217}\)

\(\frac{414141}{180180}=\frac{414141:273}{180180:273}=\frac{1517}{660}\)

\(\frac{171171171}{180180180}=\frac{171171171:9009009}{180180180:9009009}=\frac{19}{20}\)

cảm ơn bn

\(\frac{3131}{3535}=\frac{31.101}{35.101}=\frac{31}{35}.\)

\(\frac{204204}{217217}=\frac{204.1001}{217.1001}=\frac{204}{217}.\)

\(\frac{414141}{494949}=\frac{41.10101}{49.10101}=\frac{41}{49}.\)

\(\frac{171171171}{180180180}=\frac{171.1001001}{180.1001001}=\frac{171}{180}.\)

ủa cái mạ j zậy 

là sao

đây nha

\(\frac{72}{84}\)=\(\frac{6}{7}\)

\(\frac{1212}{3939}\)=\(\frac{4}{13}\)

trả lời:

\(\frac{72}{84}=\frac{18}{21}=\frac{6}{7}\)

\(\frac{1212}{3939}=\frac{1212:101}{3939:101}=\frac{12}{39}=\frac{4}{13}\)

học tốt

72\84=6\7                          1212\3939=4\13

chi tiết nhá

31/35

31/35

Ta có: \(\frac{3131}{3535}=\frac{31}{35}\)

ssssssssssssssssssssssssssssssssssssssssss

\(\frac{3131}{3535}\)= \(\frac{31}{35}\)

Tk cho mình nhé !

\(\frac{6}{9}=\frac{6:3}{9:3}=\frac{2}{3}\)

\(\frac{18}{48}=\frac{18:2}{48:2}=\frac{9}{24}\)

\(\frac{72}{84}=\frac{72:12}{84:12}=\frac{6}{7}\)

\(\frac{1212}{3939}=\frac{1212:101}{3939:101}=\frac{12}{39}\)

TL

\(\frac{6}{9}=\frac{2}{3}\)

\(\frac{18}{48}=\frac{3}{8}\)

\(\frac{72}{84}=\frac{6}{7}\)

\(\frac{1212}{3939}=\frac{4}{13}\)

nha bn\

HT

6/9=2/3

18/48=6/16

72/84=6/7

1212/3939=404/1313