The equation
can be rearranged to make "a" the subject:

To make "a" the subject of the equation
, we need to isolate "a" on one side of the equation. Here's the step-by-step process:
Starting equation:

1. Subtract 8w from both sides:

Simplify the left side:

2. Factor out the common factor of "a" on the right side:

3. Divide both sides by
to solve for "a":

So, the equation with "a" as the subject is
