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 \( \frac{5}{9} \) - \( \frac{5}{15} \)?
| \(\frac{2}{9}\) | |
| \( \frac{5}{45} \) | |
| 2 \( \frac{7}{45} \) | |
| 1 \( \frac{1}{7} \) |