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a)\(\frac{2525}{2727}\)không rút gọn được. b)\(\frac{7}{20}\) = \(\frac{42}{120}\);\(\frac{23}{30}\) = \(\frac{92}{120}\);\(\frac{34}{40}\) = \(\frac{102}{120}\);\(\frac{53}{60}\) = \(\frac{106}{120}\)
\(\frac{135135}{500500}\)= \(\frac{57027}{100100}\)
\(\frac{135153153}{170170170}\)=\(\frac{45051051}{56723390}\)
a) \(\frac{2525}{2727}=\frac{2525:101}{2727:101}=\frac{25}{27}\)
\(\frac{135135}{500500}=\frac{135135:5005}{500500:5005}=\frac{27}{100}\)
\(\frac{153153153}{170170170}=\frac{153153153:17017017}{170170170:17017017}=\frac{9}{10}\)
b) \(\frac{7}{20}=\frac{7x6}{20x6}=\frac{42}{120}\)
\(\frac{23}{30}=\frac{23x4}{30x4}=\frac{92}{120}\)
\(\frac{34}{40}=\frac{34x3}{40x3}=\frac{102}{120}\)
\(\frac{53}{60}=\frac{53x2}{60x2}=\frac{106}{120}\)
a) \(\frac{25}{27}\)
b) \(\frac{27}{100}\)
c) \(\frac{9}{10}\)
a: Phân số tối giản là 25/27; 77/79
b: 51/34=3/2
77/99=7/9
120/201=40/67
351/621=13/23
\(\frac{12}{30}=\frac{2}{5}\)
\(\frac{20}{45}=\frac{4}{9}\)
\(\frac{28}{70}=\frac{2}{5}\)
\(\frac{34}{51}=\frac{2}{3}\)
\(\frac{12}{30}\)= \(\frac{12:6}{30:6}\)= \(\frac{2}{5}\)
\(\frac{20}{45}\)=\(\frac{20:5}{45:5}\)=\(\frac{4}{9}\)
\(\frac{28}{70}\)=\(\frac{28:7}{70:7}\)=\(\frac{4}{10}\)=\(\frac{4:2}{10:2}\)=\(\frac{2}{5}\)
\(\frac{34}{51}\)=\(\frac{34:14}{51:14}\)=\(\frac{34:17}{51:17}\)= \(\frac{2}{3}\)
\(\dfrac{74}{100}=\dfrac{37}{50}\)
\(\dfrac{34}{51}=\dfrac{2}{3}\)
\(\dfrac{2525}{2727}=\dfrac{25}{27}\)
\(\dfrac{135135}{500500}=\dfrac{27}{100}\)