How to use this tool
Enter integer numerators and nonzero integer denominators. Choose an operation. Addition and subtraction use a common denominator; multiplication combines numerators and denominators; division multiplies by the second fraction’s reciprocal. The result is reduced using the greatest common divisor, with any negative sign placed in the numerator.
Try these values
1/2 + 1/3 = 5/6. The decimal result is an approximation; the reduced fraction keeps the exact relationship.
Common questions
Can a denominator be negative?
Yes. The final fraction is normalized to a positive denominator.
Why can I not divide by 0/5?
That fraction is zero. Division by zero is undefined.
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