1. **State the problem:** Solve the equation $9 = x$ for $x$. 2. **Formula and rules:** This is a simple equation where the variable $x$ is already isolated on one side. 3. **Intermediate work:** Since $x$ is alone on the right side, the solution is directly $x = 9$. 4. **Explanation:** The equation states that $x$ equals 9, so the value of $x$ is 9. **Final answer:** $x = 9$