Hank made a mistake in Step 1. The correct first step to solve the equation \( 25 = \frac{x}{4} - 9 \) would be to add 9 to both sides of the equation.
Thus, the right approach would start like this:
- Add 9 to both sides: \( 25 + 9 = \frac{x}{4} \)
- This results in: \( 34 = \frac{x}{4} \)
Hank incorrectly subtracted 9 instead of adding it, which led him to the wrong calculation. So the correct answer is:
Hank made a mistake in Step 1. The first step needed to solve this correctly would be to add 9 to both sides of the equation. Hank subtracted 9 instead of adding 9.