2. It is stipulated that "※" is an operation, for any two numbers $a, b$, there is $a ※ b=\frac{a+2 b}{3}$. If $6 ※ x=\frac{22}{3}$, then $x=$ $\qquad$ .
2. Solution: According to the problem, $6 ※ x=\frac{6+2 x}{3}$, therefore $\frac{6+2 x}{3}=\frac{22}{3}$, so $x=8$.