Ответ:
- \((-3.4) \cdot 2.7 = -9.18\).
- \(-7.6 - (-3.7) = -7.6 + 3.7 = -3.9\).
- \(-8\frac{3}{8} - 4\frac{5}{24} = -\frac{201}{24} - \frac{101}{24} = -\frac{302}{24} = -\frac{151}{12} = -12\frac{7}{12}\).
- \(-15.45 : (-15) = 1.03\).
- \(-1\frac{3}{11} : 2\frac{2}{21} = -\frac{14}{11} : \frac{44}{21} = -\frac{14}{11} \cdot \frac{21}{44} = -\frac{147}{242}\).
Ответ: 1) −9,18; 2) −3,9; 3) −12 7/12; 4) 1,03; 5) −147/242.
