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 \( \frac{8}{2} \) + \( \frac{9}{10} \)?
| 1 \( \frac{1}{10} \) | |
| 4\(\frac{9}{10}\) | |
| 1 \( \frac{7}{13} \) | |
| 1 \( \frac{8}{13} \) |