Common Denominator Calculator
Common Denominator — fraction operations and simplification.
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Sum Numerator
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Sum Denominator
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Sum as Decimal
Recent Calculations
What Is Common Denominator?
Common Denominator performs fraction arithmetic — addition, simplification, and decimal conversion.
Formula
a/b + c/d = (ad + bc) / bdFrequently Asked Questions
How do I add fractions?
Find a common denominator, add the numerators, then simplify if possible.