Ответ:
- а) \(\frac{1}{5}+\frac{53}{50}=\frac{10}{50}+\frac{53}{50}=\frac{63}{50}\).
- б) \(\frac{12}{25}\cdot\frac{5}{16}=\frac{3}{20}\).
- в) \(\frac{12}{5}:\frac{15}{2}=\frac{12}{5}\cdot\frac{2}{15}=\frac{8}{25}\).
- г) \(\frac{1}{4}-\frac{51}{20}=\frac{5}{20}-\frac{51}{20}=-\frac{46}{20}=-\frac{23}{10}\).
Ответ: а) \(\frac{63}{50}\); б) \(\frac{3}{20}\); в) \(\frac{8}{25}\); г) \(-\frac{23}{10}\).
