Subtracting fractions calculator
Because subtracting fractions can be difficult, we developed this subtracting fractions calculator. With this fraction calculator you can simply subtract a fraction from another one. Fill in two fractions below (the numerator above the scoreline and the denominator below the scoreline) and click "Calculate" to subtract the fractions.
Subtract fractions calculator (with steps)
Work and steps of the calculation
No fractions have been subtracted yet by the fraction calculator. Enter two fractions above (the numerators above the lines and the denominators below the lines) in order to subtract them. The result will be automatically simplified as an irreducible fraction. A step by step explanation of the calculation is shown.
Subtracting fractions step by step
Example subtracting fractions
How to subtract fractions?
General steps and rules for subtracting fractions:

Ensure that the denominators are the same
To subtract fractions, both denominators have to be the same. If they differ, find a common denominator. 
Find a common denominator
Try to find the least common multiple (LCM) of the denominators. The LCM is defined as the smallest number that both denominators divide into evenly. It will not always be easy to find the LCM. If that is the case you can always multiply both denominators and use this result as common denominator. 
Adjust the fractions
Express each fraction with the common denominator by multiplying both numerator and denominator of each fraction by the same factor. This gives the fractions the same denominator. 
Subtract the numerators
Once the fractions have the same denominator, you can subtract the numerators and keep the common denominator unchanged. 
Reduce the result fraction, if necessary
Reduce the result fraction to its simplest form by dividing both numerator and denominator by their greatest common factor (GCF).
This is what the process looks like in mathematical terms:
The subtracting fractions calculator will show the entire work and steps of the calculation.
Simplify fractions
Each fraction can be reduced to itâ€™s simplest form, in which the numerator and denominator are as small as possible. Try this reduce fraction calculator to simplify your fraction and find the Greatest Common Factor (GCF).
Long division calculator
A long division is a method for dividing multidigit numbers by hand. It breaks down the division of two numbers into a series of easier steps. From the makers of the fraction calculator: