1. The problem is to provide a clear, copyable answer format for math problems. 2. To do this, we use numbered steps in Markdown with LaTeX for math expressions. 3. We start by stating the problem clearly. 4. Then, we show the formulas used and explain important rules. 5. Next, we show all intermediate work such as simplifications and evaluations. 6. We explain everything in plain, learner-friendly language. 7. We ensure line breaks after each sentence for readability. 8. We follow strict LaTeX rules: inline math with $...$, display math with $$...$$, no mixing or extra brackets. 9. We escape backslashes in LaTeX commands for JSON compatibility. 10. Finally, we provide the answer in a single JSON object with all required fields. This format ensures the answer is easy to copy and understand.