Fractions must share a common denominator in order to be added or subtracted. The common denominator is the least common multiple of all the denominators.
What is \( \frac{7}{9} \) + \( \frac{5}{15} \)?
| 1 \( \frac{2}{11} \) | |
| 2 \( \frac{2}{6} \) | |
| 1\(\frac{1}{9}\) | |
| 2 \( \frac{4}{13} \) |