Ответ:

  1. \(\frac37:\frac58=\frac37\cdot\frac85=\frac{24}{35}\).
  2. \(\frac23:\frac27=\frac73\).
  3. \(8\frac13:2\frac23=\frac{25}3:\frac83=\frac{25}8=3\frac18\).
  4. \(\frac6{11}:3=\frac2{11}\).
  5. \(3\frac19:2\frac{11}{12}=\frac{28}9:\frac{35}{12}=\frac{16}{15}=1\frac1{15}\).
  6. \(6:\frac8{15}=\frac{45}4=11\frac14\).
  7. \(-4\frac57:\frac{11}{14}=-\frac{33}7\cdot\frac{14}{11}=-6\).
  8. \(-\frac8{11}:(-4)=\frac2{11}\).

Ответ: а) \(\frac{24}{35}\); б) \(\frac73\); в) \(3\frac18\); г) \(\frac2{11}\); д) \(1\frac1{15}\); е) \(11\frac14\); ж) −6; з) \(\frac2{11}\).