1. **State the problem:** Solve for $n$ in the equation $$7n - 4 = 31$$. 2. **Add 4 to both sides to isolate the term with $n$:** $$7n - 4 + 4 = 31 + 4$$ $$7n = 35$$ 3. **Divide both sides by 7 to solve for $n$:** $$\frac{7n}{\cancel{7}} = \frac{35}{\cancel{7}}$$ $$n = 5$$ 4. **Final answer:** $$n = 5$$ This means the value of $n$ that satisfies the equation is 5.