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 \( \frac{7}{5} \) - \( \frac{7}{9} \)?
| \( \frac{7}{45} \) | |
| \( \frac{3}{10} \) | |
| \(\frac{28}{45}\) | |
| 2 \( \frac{5}{8} \) |