д) $$(2\frac{2}{3} + 1\frac{1}{6}):\frac{3}{4}$$

д) $$(2\frac{2}{3} + 1\frac{1}{6}):\frac{3}{4}$$ = $$(\frac{8}{3} + \frac{7}{6}) : \frac{3}{4}$$ = $$(\frac{16}{6} + \frac{7}{6}) : \frac{3}{4}$$ = $$\frac{23}{6} : \frac{3}{4}$$ = $$\frac{23}{6} \cdot \frac{4}{3}$$ = $$\frac{23}{3} \cdot \frac{2}{3}$$ = $$\frac{46}{9}$$ = $$5\frac{1}{9}$$

Ответ: $$5\frac{1}{9}$$