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 \( \frac{3}{8} \) - \( \frac{4}{10} \)?
| 2 \( \frac{4}{13} \) | |
| 2 \( \frac{9}{40} \) | |
| -\(\frac{1}{40}\) | |
| \( \frac{7}{40} \) |