1. Let's clarify the problem to ensure we understand what is being solved. 2. If the answer is 28, we need to verify the steps or the formula used. 3. Please provide the original problem or equation so we can check the calculations step-by-step. 4. Once we have the problem, we will apply the appropriate algebraic or arithmetic operations. 5. We will show all intermediate steps to confirm the final answer is indeed 28. 6. This approach ensures accuracy and helps you understand the solution process clearly.