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 \( \frac{5}{5} \) - \( \frac{7}{9} \)?
| 2 \( \frac{6}{10} \) | |
| \(\frac{2}{9}\) | |
| 1 \( \frac{3}{6} \) | |
| 1 \( \frac{9}{45} \) |