Ответ:

  1. \(\frac2{15}-\frac3{10}=-\frac16\).
  2. \(-\frac23+\frac{13}{15}=\frac15\).
  3. \(-4\frac59-7\frac16=-11\frac79\).
  4. \(-5\frac{13}{18}+12\frac{11}{12}=7\frac{13}{36}\).
  5. \(-13+7\frac3{16}=-5\frac{13}{16}\).
  6. \(-2\frac38-1\frac59=-3\frac{67}{72}\).
  7. \(-2\frac9{20}+5\frac7{30}=2\frac{47}{60}\).
  8. \(-5\frac14+1\frac38=-3\frac78\).
  9. \(4\frac37-8\frac9{14}=-4\frac27\).