If $$2 of 8 \div 3 3\frac{4}{5} \div x - 4\frac{7}{9} = 6\frac{8}{9}$$, what is the value of $$x$$?

A

$$\frac{2}{3}$$

B

$$\frac{3}{5}$$

C

$$\frac{5}{9}$$

D

$$\frac{6}{7}$$