1. **State the problem:** We need to compare which subway car is carrying more passengers. The first car is \(\frac{11}{12}\) full and the second car is \(\frac{7}{12}\) full. 2. **Recall the rule for comparing fractions with the same denominator:** When two fractions have the same denominator, the fraction with the larger numerator is greater. 3. **Compare the numerators:** \(11 > 7\). 4. **Conclusion:** Since \(\frac{11}{12} > \frac{7}{12}\), the first subway car is carrying more passengers. **Final answer:** The first car is carrying more passengers because \(\frac{11}{12} > \frac{7}{12}\).