Add fractions
Add two signed fractions and reduce the result.
Formula
a/b + c/d = (ad + bc)/bd
First numerator = 1 · First denominator = 2 · Second numerator = 1 · Second denominator = 3
How to use
- Enter the first fraction.
- Enter the second fraction.
- Read the simplified result.
Examples
- 1/2 + 1/3 = 5/6.
- 3/4 + 1/4 = 1.
Frequently asked questions
Do denominators need to match?
No. The calculation finds a common denominator.
Is the fraction simplified?
Yes. The numerator and denominator are divided by their greatest common factor.
What inputs are supported?
Integer parts up to 1000000 in magnitude; denominators must be nonzero.
Sources
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