Simplest form answer

12/21 Simplified = 4/7

The simplified form of 12/21 is 4/7. The GCF is 3, the decimal is 0.5714..., and the percent is 57.1429...%.

Simplified

4/7

Decimal

0.5714...

Percent

57.1429...%

Step-by-step GCF reduction

1. Find the greatest common factor.

The GCF of 12 and 21 is 3.

2. Divide the numerator and denominator by the GCF.

12 ÷ 3 = 4

21 ÷ 3 = 7

3. Write the result.

12/21 simplified is 4/7.

Decimal equivalent

4/7 = 0.5714...

Percentage equivalent

4/7 = 57.1429...%

57.1429...%

The filled part represents 4/7 of one whole.

Use the main fraction simplifier for any numerator and denominator.