Để chứng tỏ các phân số trên bằng nhau,ta rút gọn như sau
$a$,$\frac{25}{53}$ = $\frac{25}{53}$ ;$\frac{2525}{5353}$=$\frac{2525:101}{5353:101}$= $\frac{25}{53}$;$\frac{252525}{535353}$=$\frac{252525:10101}{535353:10101}$= $\frac{25}{53}$
⇒$\frac{25}{53}$ =$\frac{2525}{5353}$= $\frac{252525}{535353}$
$b$,$\frac{37}{41}$ = $\frac{37}{41}$ ;$\frac{3737}{4141}$=$\frac{3737:101}{4141:101}$= $\frac{37}{41}$;$\frac{373737}{414141}$=$\frac{373737:10101}{414141:10101}$= $\frac{37}{41}$
⇒$\frac{37}{41}$ = $\frac{3737}{4141}$=$\frac{373737}{414141}$
