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 \( \frac{3}{9} \) - \( \frac{9}{15} \)?
| \( \frac{3}{11} \) | |
| 1 \( \frac{8}{45} \) | |
| -\(\frac{4}{15}\) | |
| \( \frac{3}{45} \) |