Common denominators made clear
Add and subtract fractions exactly
Choose addition or subtraction, enter two fractions or mixed numbers, and get a reduced exact answer. Different denominators are handled without decimal rounding.
Calculated locally
Enter two fractions
Exact result
1 1/4
- Improper fraction
- 5/4
- Mixed number
- 1 1/4
- Decimal
- 1.25 Terminating decimal
- Percent
- 125% Terminating decimal
Exact formula
(1 × 4 + 3 × 2) / (2 × 4)Common divisor used to reduce: 2
Comparison: <