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Ta có :
\(\frac{1960}{1008}=\frac{1960:56}{1008:56}=\frac{35}{18}\)
\(\frac{1200}{1728}=\frac{1200:48}{1728:48}=\frac{25}{36}\)
\(\frac{131313}{919191}=\frac{131313:131313}{919191:131313}=\frac{1}{7}\)
\(\frac{575757}{191919}=575757:191919=3\)
1960/1008 = 35/18
1200/1728 = 25/36
131313/919191 = 1/7
575757/191919 = 3
1313/1717 = ( 1313 :101)/(1717:101)=13/17
171717/191919=(171717:10101)/(191919:10101)=17/19
231231/343343=(231231:7007)/(343343:7007)=33/49
373737/494949=(373737:10101)/(494949:10101)=37/49
Rút gọn các phân số sau :
\(\frac{18}{30}=\frac{18\div6}{30\div6}=\frac{3}{5}\)
\(\frac{64}{80}=\frac{64\div16}{80\div16}=\frac{4}{5}\)
\(\frac{36}{27}=\frac{36\div9}{27\div9}=\frac{4}{3}\)
\(\frac{45}{35}=\frac{45\div5}{35\div5}=\frac{9}{7}\)
\(\frac{48}{96}=\frac{48:48}{96:48}=\frac{1}{2}\)
\(\frac{42}{98}=\frac{42:14}{98:14}=\frac{3}{7}\)
\(\frac{80}{240}=\frac{80:80}{240:80}=\frac{1}{3}\)
\(\frac{75}{100}=\frac{75:25}{100:25}=\frac{3}{4}\)
\(\frac{64}{720}=\frac{64:16}{720:16}=\frac{4}{45}\)
\(\frac{15}{120}=\frac{15:15}{120:15}=\frac{1}{8}\)
48/96=1/2
42/98=3/7
80/240=1/3
75/100=3/4
64/720=4/45
15/120=1/8
\(\frac{272727}{323232}=\frac{27\times10101}{32\times10101}=\frac{27}{32}\)
\(\frac{430430}{560560}=\frac{10010\times43}{10010\times56}=\frac{43}{56}\)
ta co \(\frac{272727}{323232}=\frac{27}{32};\frac{430430}{560560}=\frac{43}{56}\)
vi 27/32>43/56
=> ..............
$\frac{{15}}{6} = \frac{{15:3}}{{6:3}} = \frac{5}{2}$
$\frac{{12}}{{16}} = \frac{{12:4}}{{16:4}} = \frac{3}{4}$
$\frac{{35}}{{105}} = \frac{{35:35}}{{105:35}} = \frac{1}{3}$
\(\frac{312312}{415415}\)= \(\frac{312312:1001}{415415:1001}\)= \(\frac{312}{415}\)