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 \( \frac{9}{9} \) - \( \frac{8}{15} \)?
| \( \frac{1}{45} \) | |
| \(\frac{7}{15}\) | |
| 2 \( \frac{6}{14} \) | |
| 2 \( \frac{5}{13} \) |