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 \( \frac{7}{4} \) + \( \frac{8}{10} \)?
| \( \frac{5}{20} \) | |
| 2\(\frac{5}{9}\) | |
| 1 \( \frac{4}{13} \) | |
| \( \frac{6}{20} \) |