Rewrite the equation as .

Combine and .

Subtract from both sides of the equation.

Multiply both sides of the equation by .

Simplify .

Cancel the common factor of .

Cancel the common factor.

Rewrite the expression.

Cancel the common factor of .

Factor out of .

Cancel the common factor.

Rewrite the expression.

Simplify .

Apply the distributive property.

Combine and .

Multiply .

Combine and .

Multiply by .

Move the negative in front of the fraction.

Solve for Q P=7/3Q+18