15/18 Simplified

The fraction 15/18 written in its simplest form.

15/18 in simplest form
5/6
= 0.833333 as a decimal · 83.3333% as a percentage
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How it works

To reduce a fraction, divide the numerator and denominator by their greatest common factor (GCF).

  • GCF of 15 and 18 = 3
  • 15 ÷ 3 = 5
  • 18 ÷ 3 = 6

So 15/18 = 5/6, which cannot be reduced further because 5 and 6 share no common factor other than 1.

Equivalent fractions

15/18 = 5/6 = 10/12 = 15/18 = 20/24 — all equal to 0.833333.

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Frequently asked questions

What is 15/18 in simplest form?+

15/18 simplifies to 5/6. Both the numerator and denominator share a greatest common factor of 3, and dividing each by 3 gives 5/6.

How do you simplify 15/18?+

Find the greatest common factor (GCF) of 15 and 18, which is 3, then divide the top and bottom by it: 15 ÷ 3 = 5 and 18 ÷ 3 = 6, giving 5/6.