1. The problem asks to simplify the expression $$\frac{1}{6}x + 15 + \frac{1}{6}x$$. 2. To simplify, combine like terms. The terms $$\frac{1}{6}x$$ and $$\frac{1}{6}x$$ are like terms because they both contain the variable $$x$$. 3. Add the coefficients of $$x$$: $$\frac{1}{6} + \frac{1}{6} = \frac{2}{6}$$. 4. Simplify the fraction $$\frac{2}{6}$$ by dividing numerator and denominator by 2: $$\frac{2}{6} = \frac{1}{3}$$. 5. Now rewrite the expression with the simplified coefficient: $$\frac{1}{3}x + 15$$. 6. Therefore, the simplified form of the expression is $$\frac{1}{3}x + 15$$. 7. Looking at the options, the correct answer is A. $$\frac{1}{3}x + 15$$.