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 \( \frac{8}{4} \) - \( \frac{9}{10} \)?
| \( \frac{3}{10} \) | |
| 1 \( \frac{4}{13} \) | |
| \( \frac{5}{20} \) | |
| 1\(\frac{1}{10}\) |