Cách làm cho bạn:
a. $\frac{3}{5}$; $\frac{8}{5}$; $\frac{2}{5}$
Sắp xếp: $\frac{2}{5}$ -> $\frac{3}{5}$ -> $\frac{8}{5}$
b. $\frac{5}{2}$; $\frac{1}{6}$; $\frac{4}{3}$
- $\frac{5}{2}=\frac{5\times 3}{2\times 3}=\frac{15}{6}$
- $\frac{4}{3}=\frac{4\times 2}{3\times 2}=\frac{8}{6}$
- $\frac{1}{6}$
Sắp xếp: $\frac{1}{6}$ -> $\frac{4}{3}$ -> $\frac{5}{2}$
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