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 \( \frac{2}{5} \) - \( \frac{9}{9} \)?
| 1 \( \frac{7}{13} \) | |
| -\(\frac{3}{5}\) | |
| 2 \( \frac{9}{15} \) | |
| 2 \( \frac{2}{9} \) |