\frac{9}{14} : (-\frac{3}{7}) + 3.5 = \frac{9}{14} \cdot (-\frac{7}{3}) + 3.5 = -\frac{9}{2} \cdot \frac{1}{3} + 3.5 = -\frac{3}{2} + 3.5 = -1.5 + 3.5 = 2
Ответ: 2