6767/8484=67/84

234234/456456=39/76

\(\frac{6767}{8484}=\frac{67}{84}\)

\(\frac{234234}{456456}=\frac{234}{456}=\frac{39}{76}\)

a. 67/84

b. 39/76

viết cách làm luôn

ta lấy : 2727-1818=909

2727:909=3

1818:909=2

vậy bằng 3/2

a) 2727=27x101

   1818=18x101

nên 2727 / 1818 = 27 x 101 / 18 x 101 = 27 / 18 = 3/2 ( chia cả tử và mẫu cho 9)

b) tương tự có : 123 x 1001 / 345 x 1001 = 123 / 345 = 41 / 115 ( chia cả tử và mẫu cho 3)

2727/1818 = 303/202

\(\frac{1212}{3030}=\frac{2}{5}\)

\(\frac{32032}{48048}=\frac{2}{3}\)

\(\frac{456456}{234234}=\frac{76}{39}\)

\(\frac{1339}{1442}=\frac{13}{14}\)

#Châu's ngốc

17/26

=153/234=17/26

=17/26

\(\dfrac{6}{9}\) = \(\dfrac{6:3}{9:3}\) = \(\dfrac{2}{3}\)                    \(\dfrac{24}{36}\) = \(\dfrac{24:12}{36:12}\) = \(\dfrac{2}{3}\)

\(\dfrac{80}{240}\) = \(\dfrac{80:80}{240:80}\) = \(\dfrac{1}{3}\)           \(\dfrac{75}{100}\) = \(\dfrac{75:25}{100:25}\) = \(\dfrac{3}{4}\)

\(\dfrac{123123}{103103}\) = \(\dfrac{123123:1001}{103013:1001}\) = \(\dfrac{123}{103}\)

\(\dfrac{2121}{3232}\) = \(\dfrac{2121:101}{3232:101}\) = \(\dfrac{21}{32}\)

wow đúng hết hâm mộ quá

Bài 2:

a: \(\dfrac{1}{4};\dfrac{2}{5}\)

\(\dfrac{1}{4}=\dfrac{1\cdot5}{4\cdot5}=\dfrac{5}{20}\)

\(\dfrac{2}{5}=\dfrac{2\cdot4}{5\cdot4}=\dfrac{8}{20}\)

\(\dfrac{2}{3};\dfrac{7}{8}\)

\(\dfrac{2}{3}=\dfrac{2\cdot8}{3\cdot8}=\dfrac{16}{24}\)

\(\dfrac{7}{8}=\dfrac{7\cdot3}{8\cdot3}=\dfrac{21}{24}\)

\(\dfrac{3}{4};\dfrac{5}{6}\)

\(\dfrac{3}{4}=\dfrac{3\cdot3}{4\cdot3}=\dfrac{9}{12}\)

\(\dfrac{5}{6}=\dfrac{5\cdot2}{6\cdot2}=\dfrac{10}{12}\)

b: \(\dfrac{1}{3};\dfrac{7}{9}\)

\(\dfrac{1}{3}=\dfrac{1\cdot3}{3\cdot3}=\dfrac{3}{9}\)

\(\dfrac{7}{9}=\dfrac{7\cdot1}{9\cdot1}=\dfrac{7}{9}\)

\(\dfrac{3}{4};\dfrac{9}{24}\)

\(\dfrac{3}{4}=\dfrac{3\cdot6}{4\cdot6}=\dfrac{18}{24}\)

\(\dfrac{9}{24}=\dfrac{9\cdot1}{24\cdot1}=\dfrac{9}{24}\)

\(\dfrac{7}{10};\dfrac{19}{30}\)

\(\dfrac{7}{10}=\dfrac{7\cdot3}{10\cdot3}=\dfrac{21}{30}\)

\(\dfrac{19}{30}=\dfrac{19\cdot1}{30\cdot1}=\dfrac{19}{30}\)

Bài 1:

\(\dfrac{36}{108}=\dfrac{36:36}{108:36}=\dfrac{1}{3}\)

\(\dfrac{28}{30}=\dfrac{28:2}{30:2}=\dfrac{14}{15}\)

\(\dfrac{42}{98}=\dfrac{42:14}{98:14}=\dfrac{3}{7}\)

\(\dfrac{15}{120}=\dfrac{15:15}{120:15}=\dfrac{1}{8}\)

\(\dfrac{84}{364}=\dfrac{84:28}{364:28}=\dfrac{3}{13}\)

\(\dfrac{120}{100}=\dfrac{120:20}{100:20}=\dfrac{6}{5}\)

\(\dfrac{418}{38}=\dfrac{418:38}{38:38}=\dfrac{11}{1}=11\)

\(\dfrac{96}{1056}=\dfrac{96:96}{1056:96}=\dfrac{1}{11}\)

\(\dfrac{3838}{4040}=\dfrac{3838:101}{4040:101}=\dfrac{38}{40}=\dfrac{38:2}{40:2}=\dfrac{19}{20}\)

\(\dfrac{119119}{123123}=\dfrac{119119:1001}{123123:1001}=\dfrac{119}{123}\)

help! giúp mik với ạ!!!

A:\(\frac{1919}{7373}=\frac{1919:101}{7373:101}=\frac{19}{73}\)

    \(\frac{454545}{818181}=\frac{454545:10101}{818181:10101}=\frac{45}{81}=\frac{5}{9}\)

     \(\frac{234234}{361361}=\frac{234234:1001}{361361:1001}=\frac{234}{361}\)

B:  \(\frac{17}{18}=\frac{1}{2}+\frac{1}{3}+\frac{1}{9}\)

234/456