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 \( \frac{4}{8} \) + \( \frac{2}{10} \)?
| \( \frac{6}{13} \) | |
| 1 \( \frac{4}{40} \) | |
| \(\frac{7}{10}\) | |
| 1 \( \frac{9}{40} \) |