Simplest form answer

5/15 Simplified = 1/3

5/15 in simplest form is 1/3, found by dividing 5 and 15 by their greatest common factor, 5. As a decimal 1/3 is 0.3333..., and as a percent it is 33.3333...%.

Simplified

1/3

Decimal

0.3333...

Percent

33.3333...%

Step-by-step GCF reduction

1. Find the greatest common factor.

The GCF of 5 and 15 is 5.

2. Divide the numerator and denominator by the GCF.

5 ÷ 5 = 1

15 ÷ 5 = 3

3. Write the result.

5/15 simplified is 1/3.

Decimal and percentage equivalents

Decimal equivalent

1/3 = 0.3333...

Percentage equivalent

1/3 = 33.3333...%

Visual fraction bar

33.3333...%

The filled part represents 1/3 of one whole.

Cite this result

Quoting this answer in homework, a lesson plan, or an article? Copy a ready-made citation.

5/15 in simplest form is 1/3, found by dividing 5 and 15 by their greatest common factor, 5.
ILoveFractions, https://www.ilovefractions.com/tools/fraction-simplifier/5-15/, retrieved September 2, 2026

APA

ILoveFractions. (2026). 5/15 Simplified = 1/3. ILoveFractions.com. Retrieved September 2, 2026, from https://www.ilovefractions.com/tools/fraction-simplifier/5-15/

MLA

"5/15 Simplified = 1/3." ILoveFractions.com, https://www.ilovefractions.com/tools/fraction-simplifier/5-15/. Accessed 2 September 2026.

Need to simplify a different fraction?

Use the main fraction simplifier for any numerator and denominator.

Open the Fraction Simplifier