Step by step
- Find a common denominatorThe lowest common denominator of 3 and 4 is 12.1/3 = (1 × 4)/(3 × 4) = 4/121/4 = (1 × 3)/(4 × 3) = 3/12
- Subtract the numerators (tops)4/12 − 3/12 = 1/12
Check: 1/12 + 1/4 = 1/3 ✓
Check: 1/12 + 1/4 = 1/3 ✓
Each bar is one whole, split into equal parts.
1/3 minus 1/4 is 1/12. As a decimal it's 0.0833333.
Rewrite both fractions with a common denominator, subtract the numerators, then simplify. The steps above show each line.