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Simplifying 15/5

How to reduce 15/5 to its simplest form

To simplify 15/5 we have to divide both numerator (15) and denominator (5) by their greatest common factor (GCF). In other words, writing a fraction in its simplest form means that both numerator and denominator can no longer be divided by the same whole number other than 1.

Result simplifying 15/5

15
5
=
3
Greatest Common Factor (GCF): 5

Show steps

Simplifying 15/5 step by step

15
5
1
Find the greatest common factor of 15 and 5
To simplify a fraction, look for the greatest common factor of the numerator and the denominator. The greatest common divisor of 15 and the 5 is 5. We therefore divide the numerator and denominator by 5.
15 / 5
5 / 5
=
3
1
2
If your fraction is improper, simplify it as a mixed number.
An improper fraction is a fraction that has a larger numerator than denominator. To simplify an improper fraction as a mixed number (a number that combines a whole number and a fraction) you have to determine how many times the denominator fits the numerator. In this case the denominator (1) fits the numerator (3) 3 times. The leaves us with a remainder of 0. Therefore we can rewrite the fraction like this:
3
1
=
(3 x 1) + 0
1
=
3

Simplify fractions

If a fraction is not yet in its simplest form, you can rewrite (reduce) it into a fraction where numerator and denominator are as small as possible. Try our simplified fraction calculator to simplify your fractions and find the greatest common factor (GCF).

Simplify fraction calculator

A fraction is irreducible (in its simplest form) when the numerator and denominator have no common factors other than 1. In that case the greatest common factor is 1.