Given:
The given equation is

We need to determine the solution of the given equation.
Solution of the equation:
Step 1: To determine the value of a, first, we shall divide both sides of the equation by 3.
Thus, we get;

Simplifying, we get;

Thus, dividing both sides of the equation by 3, we get

Step 2: Finallly, subtracting both sides of the equation by 3, we have;

Simplifying, we get;

Thus, subtacting 3 from both sides of the equation, we have,

Hence, the solution of the equation is
