6. Выполните деление: 1) -28: 4; 2) -51,34: (-17); 3) -56/81 : (-32/63); 4) -1 17/18 : 3 1/9;

1) \(-28 : 4 = -7\) 2) \(-51,34 : (-17) = 3,02\) 3) \(-\frac{56}{81} : \left(-\frac{32}{63}\right) = -\frac{56}{81} \cdot \left(-\frac{63}{32}\right) = \frac{56 \cdot 63}{81 \cdot 32} = \frac{7 \cdot 7}{9 \cdot 4} = \frac{49}{36} = 1\frac{13}{36}\) 4) \(-1\frac{17}{18} : 3\frac{1}{9} = -\frac{35}{18} : \frac{28}{9} = -\frac{35}{18} \cdot \frac{9}{28} = -\frac{5 \cdot 1}{2 \cdot 4} = -\frac{5}{8}\)