Step by step
- Find a common denominatorThe lowest common denominator of 4 and 3 is 12.1/4 = (1 × 3)/(4 × 3) = 3/121/3 = (1 × 4)/(3 × 4) = 4/12
- Add the numerators (tops)3/12 + 4/12 = 7/12
Check: 7/12 − 1/3 = 1/4 ✓
Check: 7/12 − 1/3 = 1/4 ✓
Each bar is one whole, split into equal parts.
1/4 plus 1/3 is 7/12. As a decimal it's 0.583333.
Rewrite both fractions with a common denominator, add the numerators, then simplify. The steps above show each line.