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 \( \frac{4}{5} \) - \( \frac{9}{9} \)?
| \( \frac{5}{10} \) | |
| \( \frac{8}{45} \) | |
| -\(\frac{1}{5}\) | |
| \( \frac{8}{13} \) |