Ответ:
а) \( -35 : (47 - 63) = -35 : (-16) = \frac{35}{16} = 2\frac{3}{16} \).
б) \( -3{,}09 + 1{,}71 : 0{,}72 = -3{,}09 + 2{,}375 = -0{,}715 \).
в) \( \frac{7}{9} : \left(-\frac{1}{36}\right) = \frac{7}{9} \cdot (-36) = -28 \).
г) \( 2\frac{24}{49} : \frac{6}{7} + \frac{1}{14} = \frac{122}{49} \cdot \frac{7}{6} + \frac{1}{14} = \frac{61}{21} + \frac{1}{14} = \frac{122}{42} + \frac{3}{42} = \frac{125}{42} = 2\frac{41}{42} \).
д) \( \frac{9}{10} \cdot \frac{4}{9} : \left(2 - 1\frac{11}{21}\right) - 1\frac{2}{3} = \frac{2}{5} : \frac{10}{21} - \frac{5}{3} = \frac{2}{5} \cdot \frac{21}{10} - \frac{5}{3} = \frac{21}{25} - \frac{5}{3} = -\frac{62}{75} \).
Ответ: а) \(2\frac{3}{16}\); б) \(-0{,}715\); в) \(-28\); г) \(2\frac{41}{42}\); д) \(-\frac{62}{75}\).
