Adding and Subtracting Fractions Calculator

Your details

Choose whether you are entering simple fractions or mixed numbers.
The top number of the first fraction.
The bottom number of the first fraction. Must be a positive integer.
The top number of the second fraction.
The bottom number of the second fraction. Must be a positive integer.
Result (fraction)
7/12

The answer as a simplified fraction or whole number.

Result (mixed number)7/12
Result (decimal)0.583333
Least Common Denominator12
Result (decimal)0.583333

Sum: 7/12

  • The LCD of 3 and 4 is 12. Each fraction was rewritten with this common denominator before the numerators were added.
  • 7/12 is already in its simplest form (the GCD of numerator and denominator is 1).
  • As a decimal, the result is approximately 0.5833.

Next stepTo verify, convert each fraction to a decimal, perform the same operation, and compare to the decimal result shown above.

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