To solve for x, you can start by isolating the x term on one side of the equation. To do this, add 11 to both sides of the equation:
5 + 11 = 2x - 11 + 11
16 = 2x
Next, divide both sides of the equation by 2 to solve for x:
16/2 = 2x/2
8 = x
Therefore, the solution is x = 8. The correct option is A.