The correct solution to the equation x - 6 + 8 = 17 is:
x - 6 + 8 = 17
Combining like terms, we have:
x + 2 = 17
Next, we isolate x by subtracting 2 from both sides:
x + 2 - 2 = 17 - 2
x = 15
Therefore, the correct solution is x = 15.
However, none of the given answer choices (OA, B, C, or OD) accurately represent the solution to the equation. The correct answer is x = 15, and there is no value of 'a' mentioned in the original equation, so there is no solution for 'a'.