Quick guide
How to calculate three fractions
- Enter the numerator and denominator for all three fractions.
- Choose the first and second operations.
- Select Calculate fractions.
- Check the first-stage and final-stage reductions.
The calculator intentionally evaluates from left to right so the workflow is predictable. Use parentheses and separate calculations if you need conventional multiplication-before-addition precedence.
Worked example: 1/2 + 2/3 + 3/4
First, 1/2 + 2/3 = 3/6 + 4/6 = 7/6.
Then, 7/6 + 3/4 = 14/12 + 9/12 = 23/12.
The final mixed number is 1 11/12.
Why reduce between stages?
Reducing an intermediate fraction keeps the next multiplication or common-denominator calculation smaller. It does not change the value, but it makes manual checking easier and reduces unnecessary factors.