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 \( \frac{6}{9} \) - \( \frac{6}{15} \)?
| \(\frac{4}{15}\) | |
| 2 \( \frac{4}{45} \) | |
| \( \frac{6}{9} \) | |
| 2 \( \frac{7}{45} \) |