Ответ:

  1. а) \(\left(4\frac{5}{9}+\frac{4}{9}\right)\cdot9=5\cdot9=45\).
  2. б) \(\left(\frac{11}{4}+\frac{22}{3}\right)\cdot6=\frac{121}{12}\cdot6=\frac{121}{2}=60\frac{1}{2}\).
  3. в) \(\left(10-\frac{23}{11}\right)\cdot11=\frac{87}{11}\cdot11=87\).
  4. г) \(\left(8-\frac{7}{5}\cdot3\right)\cdot25=\left(8-\frac{21}{5}\right)\cdot25=\frac{19}{5}\cdot25=95\).

Ответ: а) 45; б) \(60\frac{1}{2}\); в) 87; г) 95.