1. Let's clarify Step 3 by first restating the problem and the steps before it so you have context. 2. Please provide the original problem or the previous steps so I can explain Step 3 specifically. 3. Step 3 usually involves a key manipulation such as simplification, substitution, factoring, or applying a formula. 4. Once I know the exact content of Step 3, I will break down the math involved into clear, simple explanations. Feel free to share the problem or the earlier steps, and I'll help you through Step 3 in detail.