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 \( \frac{9}{5} \) - \( \frac{5}{9} \)?
| 2 \( \frac{9}{45} \) | |
| 2 \( \frac{9}{13} \) | |
| 1\(\frac{11}{45}\) | |
| 1 \( \frac{8}{17} \) |