The simplest form of 6/21 is 2/7.
Steps to simplifying fractions
- Find the GCD (or HCF) of numerator and denominator
GCD of 6 and 21 is 3 - Divide both the numerator and denominator by the GCD
6 ÷ 3/21 ÷ 3 - Reduced fraction: 2/7
Therefore, 6/21 simplified to lowest terms is 2/7.
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Equivalent fractions: 12/42 18/63 2/7 30/105 42/147
More fractions: 12/21 6/42 18/21 6/63 7/21 6/225/21 6/20