Ответ:
Сократим дроби: \(\frac{66}{88}=\frac{3}{4}\), \(\frac{5}{10}=\frac{1}{2}\), \(\frac{11}{55}=\frac{1}{5}\).
\(\frac{3}{4}-\frac{1}{2}-\frac{1}{5}=\frac{15}{20}-\frac{10}{20}-\frac{4}{20}=\frac{1}{20}\).
Ответ: \(\frac{1}{20}\).
Сократим дроби: \(\frac{66}{88}=\frac{3}{4}\), \(\frac{5}{10}=\frac{1}{2}\), \(\frac{11}{55}=\frac{1}{5}\).
\(\frac{3}{4}-\frac{1}{2}-\frac{1}{5}=\frac{15}{20}-\frac{10}{20}-\frac{4}{20}=\frac{1}{20}\).
Ответ: \(\frac{1}{20}\).