199. Найдите значение выражения: 3) (−11/18 + 29/45) : (35/54 − 19/27); 4) −4 1/7 + 2 1/4 · (−11 2/9 − (−5,4) : 9/35).

1. \(\left(−\frac{11}{18}+\frac{29}{45}\right):\left(\frac{35}{54}−\frac{19}{27}\right)=\frac{1}{30}:\left(−\frac{1}{18}\right)=−\frac{3}{5}\).
2. \(−4\frac{1}{7}+2\frac{1}{4}\cdot\left(−11\frac{2}{9}−(−5,4):\frac{9}{35}\right)\)
   \(=−\frac{29}{7}+\frac{9}{4}\cdot\left(−\frac{101}{9}+\frac{27}{5}\cdot\frac{35}{9}\right)\)
   \(=−\frac{29}{7}+\frac{9}{4}\cdot\frac{88}{9}=−\frac{29}{7}+22=\frac{125}{7}=17\frac{6}{7}\).

Ответ: 3) \(−\frac{3}{5}\); 4) \(17\frac{6}{7}\).