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 \( \frac{9}{4} \) - \( \frac{5}{10} \)?
| \( \frac{8}{11} \) | |
| 2 \( \frac{4}{20} \) | |
| 2 \( \frac{1}{5} \) | |
| 1\(\frac{3}{4}\) |