Solve for $x$.
\[
(x-3) k=z
\]
Final Answer: $x = \boxed{3 + \frac{z}{k}}$
Step 1 :The question is asking to solve for $x$ in the equation $(x-3)k = z$.
Step 2 :To isolate $x$, we need to first divide both sides of the equation by $k$ to get $x-3 = \frac{z}{k}$.
Step 3 :Then add 3 to both sides to get $x = 3 + \frac{z}{k}$.
Step 4 :The solution to the equation is $x = 3 + \frac{z}{k}$.
Step 5 :Final Answer: $x = \boxed{3 + \frac{z}{k}}$