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 \( \frac{4}{4} \) - \( \frac{2}{10} \)?
| 2 \( \frac{1}{6} \) | |
| \(\frac{4}{5}\) | |
| \( \frac{6}{20} \) | |
| \( \frac{9}{18} \) |