Giải thích các bước giải:
$\frac{6}{8}$ = $\frac{6.125}{8.125}$ = $\frac{750}{1000}$
$\frac{9}{125}$ = $\frac{9.8}{125.8}$ = $\frac{72}{1000}$
$\frac{15}{4}$ = $\frac{15.25}{4.25}$ = $\frac{375}{100}$
$\frac{18}{200}$ = $\frac{18:2}{200:2}$ = $\frac{9}{100}$
$\frac{6}{25}$ = $\frac{6.4}{25.4}$ = $\frac{24}{100}$
$\frac{500}{2000}$ = $\frac{500:2}{2000:2}$ = $\frac{250}{1000}$ = $\frac{25}{100}$
$\frac{64}{800}$ = $\frac{64:8}{800:8}$ = $\frac{8}{100}$
$\frac{6}{30}$ = $\frac{6:3}{30:3}$ = $\frac{2}{10}$
$\frac{5}{50}$ =$\frac{5:5}{50:5}$ = $\frac{1}{10}$
$\frac{18}{60}$ = $\frac{18:6}{60:6}$ = $\frac{3}{10}$
