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 \( \frac{3}{4} \) - \( \frac{9}{8} \)?
| 2 \( \frac{4}{12} \) | |
| 2 \( \frac{3}{10} \) | |
| 1 \( \frac{1}{4} \) | |
| -\(\frac{3}{8}\) |