\(\frac{72}{84}\)= \(\frac{6}{7}\)

6/7 nha

tk mình nha

Cách 1 :72/84 = 36/42 = 18/21 = 6/7 chia mỗi phần ở phân số cho 2

Cách 2 : 72/84 = 6/7 chia mỗi phần ở phần số cho 12

Bạn giải cách nào cũng được

Rút gọn:

\(\frac{35}{45}=\frac{35}{45}:\frac{5}{5}=\frac{7}{9}\)

HT

35/45 = 35 : 5 / 45 : 5 = 7/9 nhé

Rút gọn PS :

35/45 = 35/45 : 5/5 = 7/9

TL

\(\dfrac{90}{120}=\dfrac{30.3}{30.4}=\dfrac{3}{4}\)

\(\dfrac{15}{25}=\dfrac{5.3}{5.5}=\dfrac{3}{5}\)

\(\dfrac{18}{45}=\dfrac{9.2}{9.5}=\dfrac{2}{5}\)

\(\dfrac{36}{64}=\dfrac{4.9}{4.16}=\dfrac{9}{16}\)

\(\dfrac{32}{72}=\dfrac{8.4}{8.9}=\dfrac{4}{9}\)

\(\dfrac{84}{49}=\dfrac{7.12}{7.7}=\dfrac{12}{7}\)

\(\dfrac{90}{120}=\dfrac{3}{4};\dfrac{15}{25}=\dfrac{3}{5};\dfrac{18}{45}=\dfrac{2}{5};\dfrac{36}{64}=\dfrac{9}{16};\dfrac{32}{72}=\dfrac{4}{9};\dfrac{84}{49}=\dfrac{12}{7}\)

\(\dfrac{3}{4},\dfrac{3}{5},\dfrac{2}{5},\dfrac{9}{16},\dfrac{4}{9},\dfrac{12}{7}\)

`27/81=(27:27)/(81:27)=1/3`

`57/76=(57:19)/(76:19)=3/4`

`35/84=(35:7)/(84:7)=5/12`

`MSC:12`

`1/3=(1xx4)/(3xx4)=4/12`

`3/4=(3xx3)/(4xx3)=9/12`

`5/12` giữ nguyên

\(\dfrac{27}{81}=\dfrac{1}{3}\); \(\dfrac{57}{76}=\dfrac{3}{4}\); \(\dfrac{35}{84}=\dfrac{5}{12}\)

\(\dfrac{1}{3}=\dfrac{4}{12}\)

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

Giữa nguyên 5/12

\(\dfrac{12\times1}{12\times6}=\dfrac{1}{6}\)

\(\dfrac{12}{72}=\dfrac{12:12}{72:12}=\dfrac{1}{6}\)

\(\dfrac{12}{72}=\dfrac{12:12}{72:12}=\dfrac{1}{6}\)

hình đâu

giải giúp mình nhé mình cần gấp

Mình mới học xong luôn 

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

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

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

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

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

a) 27 / 36 = 27 : 9 / 36 : 9 = 3/4

b) 72/96 = 72 : 24 / 96 : 24 = 3/4

c) 55 / 110 = 55 : 55 / 110 : 55 = 1/2

d) 88 / 99 = 88 : 11 / 99 : 11 = 8/9

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:

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

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

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

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