Rewrite the equation as .

Multiply both sides of the equation by .

Simplify .

Multiply .

Combine and .

Combine and .

Cancel the common factor of .

Cancel the common factor.

Rewrite the expression.

Divide each term in by .

Simplify the left side.

Cancel the common factor of .

Cancel the common factor.

Divide by .

Solve for a A=1/2ap