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 \( \frac{2}{4} \) - \( \frac{4}{8} \)?
| 1 \( \frac{1}{8} \) | |
| \( \frac{1}{7} \) | |
| 1 \( \frac{6}{15} \) | |