Có phải bn Chi Trần trên H không?Mk là Vũ Elsa nè

\(\frac{3939-101}{3.2929+505}=\frac{3838}{9292}=\frac{19}{46}\)

a/\(\frac{3939-101}{3.2929+505}=\frac{39.101-101}{8787+505}=\frac{101.\left(39-1\right)}{87.101+5.101}=\frac{101.38}{101.\left(87+5\right)}=\frac{38}{92}\)

\(=\frac{38}{92}\)

b/\(\frac{6.4+6.7}{6.5+12}=\frac{4+1.7}{1.5+2}=\frac{4+7}{5+2}=\frac{11}{7}\)

\(\frac{6.4+6.7}{6.5+12}\)\(=\frac{6.4+6.7}{6.5+6.2}\)\(=\frac{6.\left(4+7\right)}{6.\left(5+2\right)}\)\(=\frac{6.11}{6.7}\)\(=\frac{11}{7}\)

1/8;24/1313;404/1313

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

\(\dfrac{72}{3939}=\dfrac{24}{1313}\)

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

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:

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

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

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

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

1212/3939=4/13

3131/3535=31/35 

tk mình nhé bạn

Thank you vẻy much

1212/3939 = 4/13

3131/3535 = 31/35

tk mình nha

1212/3939=4/13

3131/3535=31/35

k mk nha

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

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

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

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

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

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

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

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

15/35=3/7

44/121=(hình như ko rút gọn dc)

202/205=(hình như cx ko rút gọn dc )

k mk nhé