Ответ:
\(\frac{3}{4}:\frac{1}{2}=\frac{3}{2}\).
\(\frac{15}{8}+\frac{3}{2}=\frac{27}{8}\).
\(\frac{2}{5}\cdot\frac{27}{8}=\frac{27}{20}=1\frac{7}{20}\).
Ответ: \(1\frac{7}{20}\).
\(\frac{3}{4}:\frac{1}{2}=\frac{3}{2}\).
\(\frac{15}{8}+\frac{3}{2}=\frac{27}{8}\).
\(\frac{2}{5}\cdot\frac{27}{8}=\frac{27}{20}=1\frac{7}{20}\).
Ответ: \(1\frac{7}{20}\).