ц) $$-2\frac{2}{3} - 3\frac{5}{9}$$

$$-2\frac{2}{3} - 3\frac{5}{9} = -\frac{8}{3} - \frac{32}{9} = -\frac{8 \cdot 3}{3 \cdot 3} - \frac{32}{9} = -\frac{24}{9} - \frac{32}{9} = \frac{-24-32}{9} = \frac{-56}{9} = -6\frac{2}{9}$$ Ответ: $$-6\frac{2}{9}$$