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 \( \frac{2}{4} \) - \( \frac{2}{10} \)?
| 2 \( \frac{4}{20} \) | |
| \(\frac{3}{10}\) | |
| 1 \( \frac{8}{20} \) | |
| 2 \( \frac{1}{20} \) |