How it is calculated
The minus sign may sit on the numerator or on the denominator. A factor shared by both is cancelled.
a/b + c/d = (ad + bc) / bd
Where the numbers come from
- Action
- First numerator
- First denominator
- Second numerator
- Second denominator
Example
1/2 + 1/3 = 5/6.
Questions
Mixed numbers?
Turn them into an improper fraction, or use the mixed-number calculator beside this one.
Division by zero?
If the second fraction is zero, division stops.
An integer in the answer?
If the denominator reduces to 1, a whole number is shown, with no bar.