1. The problem is to understand how to simplify an expression or equation. 2. Simplification often involves reducing fractions, combining like terms, or factoring expressions. 3. A key rule is that when dividing both numerator and denominator by the same nonzero factor, you can cancel that factor using \cancel{} notation. 4. For example, simplifying \frac{6}{9} involves dividing numerator and denominator by 3: $$\frac{6}{9} = \frac{\cancel{3} \times 2}{\cancel{3} \times 3} = \frac{2}{3}$$ 5. This shows the intermediate step where the common factor 3 is canceled. 6. Always ensure that the factor you cancel is common to both numerator and denominator and is not zero. 7. Simplification makes expressions easier to work with and understand. 8. If you provide a specific expression, I can show the exact simplification steps.