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 \( \frac{9}{3} \) + \( \frac{3}{7} \)?
| 1 \( \frac{1}{9} \) | |
| 3\(\frac{3}{7}\) | |
| 1 \( \frac{2}{6} \) | |
| 1 \( \frac{8}{15} \) |