ILoveFractions Logo

Search I Love Fractions

Jump to any fraction tool, practice drill, game, or guide.

Simplest form answer

21/24 Simplified = 7/8

21/24 in simplest form is 7/8, found by dividing 21 and 24 by their greatest common factor, 3. As a decimal 7/8 is 0.875, and as a percent it is 87.5%.

Simplified

7/8

Decimal

0.875

Percent

87.5%

Step-by-step GCF reduction

1. Find the greatest common factor.

The GCF of 21 and 24 is 3.

2. Divide the numerator and denominator by the GCF.

21 ÷ 3 = 7

24 ÷ 3 = 8

3. Write the result.

21/24 simplified is 7/8.

Decimal and percentage equivalents

Decimal equivalent

7/8 = 0.875

Percentage equivalent

7/8 = 87.5%

Visual fraction bar

87.5%

The filled part represents 7/8 of one whole.

Cite this result

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

21/24 in simplest form is 7/8, found by dividing 21 and 24 by their greatest common factor, 3.

ILoveFractions, https://www.ilovefractions.com/tools/fraction-simplifier/21-24/, retrieved

APA

ILoveFractions. (2026). 21/24 Simplified = 7/8. ILoveFractions.com. Retrieved September 2, 2026, from https://www.ilovefractions.com/tools/fraction-simplifier/21-24/

MLA

"21/24 Simplified = 7/8." ILoveFractions.com, https://www.ilovefractions.com/tools/fraction-simplifier/21-24/. Accessed 2 September 2026.

Need to simplify a different fraction?

Use the main fraction simplifier for any numerator and denominator.

Open the Fraction Simplifier