The simplest form of 15/3 is 5/1.
Steps to simplifying fractions
- Find the GCD (or HCF) of numerator and denominator
GCD of 15 and 3 is 3 - Divide both the numerator and denominator by the GCD
15 ÷ 3/3 ÷ 3 - Reduced fraction: 5/1
Therefore, 15/3 simplified to lowest terms is 5/1.
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Equivalent fractions: 30/6 45/9 5/1 75/15 105/21
More fractions: 30/3 15/6 45/3 15/9 16/3 15/414/3 15/2