Ответ:

  1. \(\frac{15}{24\cdot5}=\frac18\).
  2. \(\frac1{11}+\frac47=\frac{51}{77}\).
  3. \(7-4=3\).
  4. \(5+2-2\sqrt{10}=7-2\sqrt{10}\).
  5. \(0{,}2\cdot0{,}5-\frac16\cdot12=0{,}1-2=-1{,}9\).
  6. \(10\sqrt5+15\sqrt5-8\sqrt5=17\sqrt5\).
  7. \(\sqrt4=2\).
  8. \(8\cdot3=24\).