Simplest form answer

21/84 Simplified = 1/4

21/84 in simplest form is 1/4, found by dividing 21 and 84 by their greatest common factor, 21. As a decimal 1/4 is 0.25, and as a percent it is 25%.

Simplified

1/4

Decimal

0.25

Percent

25%

Step-by-step GCF reduction

1. Find the greatest common factor.

The GCF of 21 and 84 is 21.

2. Divide the numerator and denominator by the GCF.

21 ÷ 21 = 1

84 ÷ 21 = 4

3. Write the result.

21/84 simplified is 1/4.

Decimal and percentage equivalents

Decimal equivalent

1/4 = 0.25

Percentage equivalent

1/4 = 25%

Visual fraction bar

25%

The filled part represents 1/4 of one whole.

Cite this result

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21/84 in simplest form is 1/4, found by dividing 21 and 84 by their greatest common factor, 21.
ILoveFractions, https://www.ilovefractions.com/tools/fraction-simplifier/21-84/, retrieved September 2, 2026

APA

ILoveFractions. (2026). 21/84 Simplified = 1/4. ILoveFractions.com. Retrieved September 2, 2026, from https://www.ilovefractions.com/tools/fraction-simplifier/21-84/

MLA

"21/84 Simplified = 1/4." ILoveFractions.com, https://www.ilovefractions.com/tools/fraction-simplifier/21-84/. Accessed 2 September 2026.

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