Mathematics
Fraction calculator
Add, subtract, multiply, divide and simplify fractions.
Your numbers
Both a decimal point and a comma work.
Result
5 / 6
Simplified result
- Decimal value
- 0.833333
How it works
a/b ± c/d = (ad ± bc)/bd
Using the calculator
Enter «Operations»: First numerator · First denominator · Operation · Second numerator · Second denominator. Calculation: a/b ± c/d = (ad ± bc)/bd.
Enter «Simplify»: Numerator · Denominator. Calculation: a/b → (a/gcd)/(b/gcd).
Worked input and result
Example (Operations): First numerator = 3; First denominator = 4; Operation = +; Second numerator = 1; Second denominator = 8. Result: Simplified result = 7 / 8 (Decimal value: 0.875).
Example (Simplify): Numerator = 3; Denominator = 4. Result: Simplified result = 3 / 4.
Understanding the result
Enter integer numerators and denominators. Fractions are reduced exactly; decimal displays are rounded. Denominators cannot be zero.
A fraction with zero denominator is undefined. For addition and subtraction use a common denominator; for division multiply by the reciprocal of a nonzero fraction.