Ответ:

  1. \(\frac{4}{11}\cdot4\frac{7}{12}=\frac{4}{11}\cdot\frac{55}{12}=\frac{5}{3}\).
  2. \(6:\frac{8}{15}=6\cdot\frac{15}{8}=\frac{45}{4}=11\frac{1}{4}\).
  3. \(7\frac{5}{8}+3\frac{2}{3}-8\frac{3}{16}=\frac{61}{8}+\frac{11}{3}-\frac{131}{16}=\frac{122+176-131}{16}=\frac{167}{16}=10\frac{7}{16}\).
  4. \(0,5-\frac{4}{25}+\frac{3}{20}=\frac{1}{2}-\frac{4}{25}+\frac{3}{20}=\frac{50-16+15}{100}=\frac{49}{100}=0,49\).
  5. \(\frac{4\frac{2}{7}\cdot1\frac{3}{4}-3,36}{0,8+1,5}=\frac{\frac{30}{7}\cdot\frac{7}{4}-3,36}{2,3}=\frac{7,5-3,36}{2,3}=\frac{4,14}{2,3}=1,8\).

Ответ: а) \(\frac{5}{3}\); б) \(11\frac{1}{4}\); в) \(10\frac{7}{16}\); г) 0,49; д) 1,8.