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 \( \frac{2}{8} \) - \( \frac{4}{10} \)?
| \( \frac{7}{40} \) | |
| 2 \( \frac{4}{40} \) | |
| 2 \( \frac{6}{13} \) | |
| -\(\frac{3}{20}\) |