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 \( \frac{9}{2} \) - \( \frac{4}{8} \)?
| 4 | |
| 2 \( \frac{9}{8} \) | |
| 2 \( \frac{1}{8} \) | |
| 1 \( \frac{5}{8} \) |