Solve the following formula for the specified variable. \[ C=\frac{1}{2} f(q+b) \text { for } q \]

Step 1 ：Multiply both sides of the equation by 2 to get rid of the fraction: \(2C = f(q+b)\)

Step 2 ：Divide both sides of the equation by f to isolate the term containing q: \(\frac{2C}{f} = q+b\)

Step 3 ：Subtract b from both sides of the equation to solve for q: \(q = \frac{2C}{f} - b\)

Step 4 ：The solution to the equation is \(q = \boxed{\frac{2C}{f} - b}\)