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 \( \frac{6}{9} \) + \( \frac{5}{15} \)?
| \( \frac{3}{45} \) | |
| \( \frac{3}{7} \) | |
| 1 | |
| \( \frac{5}{8} \) |