Bài Làm:
1.
$\frac{14}{28}$ = $\frac{1}{2}$ $\frac{48}{30}$ = $\frac{8}{5}$ |
$\frac{25}{50}$ = $\frac{1}{2}$ $\frac{81}{54}$ = $\frac{3}{2}$ |
2.
$\frac{2}{3}$ = $\frac{20}{30}$ = $\frac{8}{12}$
3.
b) $\frac{8x7x5}{11x8x7}$ = $\frac{5}{11}$
4.
a) $\frac{25}{100}$ = $\frac{5}{20}$ = $\frac{8}{32}$
b) B. $\frac{50}{150}$