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 \( \frac{9}{2} \) - \( \frac{9}{4} \)?
| \( \frac{3}{6} \) | |
| 1 \( \frac{3}{4} \) | |
| 2\(\frac{1}{4}\) | |
| 1 \( \frac{1}{4} \) |