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 \( \frac{4}{5} \) + \( \frac{5}{9} \)?
| 2 \( \frac{8}{13} \) | |
| \( \frac{9}{14} \) | |
| 1\(\frac{16}{45}\) | |
| \( \frac{4}{45} \) |