д)$$8\frac{3}{27}-\frac{2}{3}$$

д) $$8\frac{3}{27}-\frac{2}{3} = 8\frac{1}{9} - \frac{2}{3} = \frac{73}{9} - \frac{2}{3} = \frac{73 - 2 \cdot 3}{9} = \frac{73 - 6}{9} = \frac{67}{9} = 7\frac{4}{9}$$

Ответ: $$7\frac{4}{9}$$