Ответ:
- а) \(\frac{5}{12}+\frac{6}{12}=\frac{11}{12}\).
- б) \(\frac{15}{20}-\frac{7}{20}=\frac{8}{20}=\frac{2}{5}\).
- в) \(\frac{3}{4}\cdot\frac{8}{9}=\frac{24}{36}=\frac{2}{3}\).
- г) \(\frac{5}{8}:\frac{5}{16}=\frac{5}{8}\cdot\frac{16}{5}=2\).
Ответ: а) \(\frac{11}{12}\); б) \(\frac{2}{5}\); в) \(\frac{2}{3}\); г) 2.
