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 \( \frac{7}{4} \) - \( \frac{3}{10} \)?
| 1\(\frac{9}{20}\) | |
| 2 \( \frac{3}{9} \) | |
| \( \frac{7}{20} \) | |
| 1 \( \frac{2}{9} \) |