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 \( \frac{4}{9} \) - \( \frac{9}{15} \)?
| \( \frac{9}{45} \) | |
| -\(\frac{7}{45}\) | |
| 1 \( \frac{4}{45} \) | |
| 1 \( \frac{2}{7} \) |