c 212121/353535

=212121:21/353535:35

=10101/10101

=212121:10101/353535:10101

=21/35

\(\dfrac{323232}{242424}=\dfrac{323232:80808}{242424:80808}=\dfrac{4}{3}\)

\(\dfrac{323232}{242424}=\dfrac{323232:80808}{242424:80808}=\dfrac{4}{3}\)

\(\frac{272727}{323232}=\frac{27\times10101}{32\times10101}=\frac{27}{32}\)

\(\frac{430430}{560560}=\frac{10010\times43}{10010\times56}=\frac{43}{56}\)

ta co \(\frac{272727}{323232}=\frac{27}{32};\frac{430430}{560560}=\frac{43}{56}\)

vi 27/32>43/56

=>       ..............

272727   272727:10101    27              430430       430430:1001            430

---------=   ------------------- = -------------  ; -----------  =   -----------------------  =    ------

323232    323232:10101     32           560560         560560:1001           560

\(\frac{373737-10101}{818181-30303}=\frac{363636}{787878}=\frac{36}{78}\)

\(\frac{474}{2054}=\frac{3}{13}\)

Ta có \(\frac{3}{13}=\frac{18}{78}\)

\(\Rightarrow\frac{18}{78}< \frac{36}{78}\)

\(\frac{373737-10101}{818181-30303}\)

=\(\frac{37.10101-10101}{81.10101-10101.3}\)

=\(\frac{10101.\left(37-1\right)}{10101.\left(81-3\right)}\)

=\(\frac{36}{78}\)

=\(\frac{6.6}{6.13}\)

=\(\frac{6}{13}\)

hk tốt nha bn

\(\frac{30303}{80808}=\frac{3\times10101}{8\times10101}=\frac{3}{8}\)

4/7

\(\dfrac{4}{7}\)

4/7

232323/474747 = 232323/474747 : 11/11 = 23/47

376376/159159 = 376376/159159 : 1001/1001 = 376/159

232323/474747=232323:10101/474747:10101=23/47

376376/159159=376376:1001/159159:1001=376/159