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 \( \frac{3}{8} \) + \( \frac{9}{10} \)?
| \( \frac{6}{14} \) | |
| 1\(\frac{11}{40}\) | |
| 2 \( \frac{1}{10} \) | |
| \( \frac{4}{7} \) |