1. Let's start by understanding the problem: you want to know why the answer to a WAEC question is $\frac{11}{2}$. Without the exact question, I'll explain a common scenario where $\frac{11}{2}$ appears as an answer. 2. Suppose the problem involves solving a linear equation or simplifying a fraction. For example, consider the equation $2x - 3 = 8$. 3. To solve for $x$, we add 3 to both sides: $$2x - 3 + 3 = 8 + 3$$ which simplifies to $$2x = 11$$ 4. Next, divide both sides by 2 to isolate $x$: $$x = \frac{11}{2}$$ 5. This shows that $x = \frac{11}{2}$ is the solution to the equation. 6. The key rules used here are: - To isolate the variable, perform inverse operations. - Addition and subtraction undo each other. - Multiplication and division undo each other. 7. If your WAEC question is similar, this explains why the answer is $\frac{11}{2}$. If you provide the exact question, I can give a more precise explanation.