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 \( \frac{9}{4} \) - \( \frac{2}{10} \)?
| \( \frac{2}{20} \) | |
| \( \frac{4}{7} \) | |
| 2\(\frac{1}{20}\) | |
| \( \frac{3}{11} \) |