1. Let's clarify the step where the denominator is rewritten. 2. Suppose the original expression is $$\frac{6x}{3}$$. 3. You can simplify the denominator by dividing numerator and denominator by 3. 4. This is shown as $$\frac{\cancel{3} \cdot 2x}{\cancel{3}} = 2x$$. 5. So, the denominator becomes 1 after canceling 3, not just 3. 6. Therefore, the denominator should not just be 3; it is simplified to 1 in this step. 7. This simplification helps to reduce the fraction to its simplest form.