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a) \(\frac{171717}{292929}=\frac{171717:10101}{292929:10101}=\frac{17}{29}\)
b) \(\frac{3344}{1212}=\frac{3344:4}{1212:4}=\frac{836}{303}\)
c) \(\frac{20192019}{20172017}=\frac{20192019:10001}{20172017:10001}=\frac{2019}{2017}\)
a) 17/29(chia cho 10101)
B) 836/303( chia 4)
C) 2019/2017(chia 10001)
![](https://rs.olm.vn/images/avt/0.png?1311)
-1717/2323=-17/23
-171717/232323=-17/23
123123/237237=41/79
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\(\left(\dfrac{17}{15}+\dfrac{17}{35}+\dfrac{17}{63}+\dfrac{17}{99}\right)\times\dfrac{11}{8}=\dfrac{68}{33}\times\dfrac{11}{8}=\dfrac{17}{6}\)
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\(\dfrac{32.9.11}{12.24.22}\) = \(\dfrac{8.4.3.3.11}{3.4.8.3.11.2}\) = \(\dfrac{1}{2}\)
\(\dfrac{32.9.11}{12.24.22}=\dfrac{8.4.3.3.11}{3.4.8.3.11.2}=\dfrac{1}{2}\)
![](https://rs.olm.vn/images/avt/0.png?1311)
Đáp án:
`649/36`
Giải thích các bước giải:
`27` x `171717/272727` `+` `373737/363636` `=`
Rút gọn Phân số ta được:
`=` `27` x `17/27` `+` `37/36`
`=` `17` `+` `37/36` `=` `649/36`
![](https://rs.olm.vn/images/avt/0.png?1311)
\(\dfrac{72\times75}{125\times108}\) = \(\dfrac{36\times2\times25\times3}{25\times5\times36\times3}\) = \(\dfrac{2}{5}\)
17/15
Nêu cách lm