To solve the equation \(-9(x - 5) = 45\), the first step is to isolate the term involving \(x\).
To do this, you'll want to get rid of the \(-9\) that is multiplied by \((x - 5)\).
The second step in solving this equation would be to divide both sides by \(-9\) to isolate \((x - 5)\).
So, the correct answer is:
C. Divide both sides by -9.