Grieuruufuru rồi ư là một trong ytgyuryuty tuy yyyeyrheygteteyyeh

\(a.\dfrac{5}{10}=\dfrac{1}{2}=\dfrac{1\times3}{2\times3}=\dfrac{3}{6}\)

\(\dfrac{25}{75}=\dfrac{1}{3}=\dfrac{1\times2}{3\times2}=\dfrac{2}{6}\)

\(b.\dfrac{42}{56}=\dfrac{3}{4}=\dfrac{3\times2}{4\times2}=\dfrac{6}{8}\)

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

\(c.\dfrac{27}{81}=\dfrac{1}{3}=\dfrac{1\times4}{3\times4}=\dfrac{4}{12}\)

\(\dfrac{57}{76}=\dfrac{3}{4}=\dfrac{3\times3}{4\times3}=\dfrac{9}{12}\)

\(\dfrac{35}{84}=\dfrac{5}{12}\)

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a.3/6 va 2/6     b.24/32 va12/32  c.912/2736  2052/2736 1140/2736 

27/81=1/3

57/76=3/4

35/84=5/12

27/81=1/3

57/76=3/4

35/84=5/12

567895464468457899999 hư đi em 

https://olm.vn/hoi-dap/question/1037641.html

Rút gọn các phân số sau :

\(\frac{18}{30}=\frac{18\div6}{30\div6}=\frac{3}{5}\)

\(\frac{64}{80}=\frac{64\div16}{80\div16}=\frac{4}{5}\)

\(\frac{36}{27}=\frac{36\div9}{27\div9}=\frac{4}{3}\)

\(\frac{45}{35}=\frac{45\div5}{35\div5}=\frac{9}{7}\)

\(\frac{18}{30}=\frac{3}{5}\)

\(\frac{64}{80}=\frac{4}{5}\)

\(\frac{36}{27}=\frac{4}{3}\)

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

\(\frac{5^3.90.4^3}{25^2.3^2.2^{13}}=\frac{5^3.2.3^2.5.\left(2^2\right)^3}{\left(5^2\right)^2.3^2.2^{13}}=\frac{5^4.3^2.2^7}{5^4.3^2.2^{13}}=\frac{1}{2^4}=\frac{1}{16}\)

1/16                            

\(\frac{5^3.90.4^3}{25^3.3^2.2^{13}}=\frac{125.90.64}{15625.9.8192}=\frac{125.9.10.64}{125.125.9.64.128}=\frac{10}{125.128}=\frac{10}{16000}=\frac{1}{1600}\)

27/81=3/9=1/3

có lộn đề ko vậy trời ????????????????????????????????????????

76/125=76/125

25/100=1/4

14/21=2/3

48/100=12/25

K mk nha

\(\frac{76}{125}=\frac{76}{125}\)

\(\frac{25}{100}=\frac{1}{4}\)

\(\frac{14}{21}=\frac{2}{3}\)

\(\frac{48}{100}=\frac{12}{25}\)

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Lấy máy tính mà tính cho nhanh nhé

=38/47

\(\dfrac{76}{94}=\dfrac{76:2}{94:2}=\dfrac{38}{47}\)

\(\dfrac{37}{47}\)

`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