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 \( \frac{4}{5} \) + \( \frac{4}{9} \)?
| 2 \( \frac{1}{8} \) | |
| 1 \( \frac{4}{8} \) | |
| 1 \( \frac{9}{12} \) | |
| 1\(\frac{11}{45}\) |