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 \( \frac{7}{8} \) + \( \frac{2}{10} \)?
| 2 \( \frac{8}{12} \) | |
| 1 \( \frac{4}{12} \) | |
| 1\(\frac{3}{40}\) | |
| 1 \( \frac{7}{40} \) |