Решение:
\[ 0,14 = \frac{14}{100} = \frac{7}{50} \]
\[ \frac{3}{20} = \frac{3 \times 5}{20 \times 5} = \frac{15}{100} \]
\[ \frac{7}{50} = \frac{7 \times 2}{50 \times 2} = \frac{14}{100} \]
Ответ: 3/20