1. **State the problem:** Simplify the expression $8n + (-6n)$. 2. **Recall the rule:** When adding terms with the same variable, add their coefficients. 3. **Apply the rule:** $8n + (-6n) = (8 + (-6))n$. 4. **Simplify the coefficients:** $8 + (-6) = 8 - 6 = 2$. 5. **Write the final simplified expression:** $2n$. So, the simplified form of $8n + (-6n)$ is $2n$.