Simplest form answer

30/40 Simplified = 3/4

30/40 in simplest form is 3/4, found by dividing 30 and 40 by their greatest common factor, 10. As a decimal 3/4 is 0.75, and as a percent it is 75%.

Simplified

3/4

Decimal

0.75

Percent

75%

Step-by-step GCF reduction

1. Find the greatest common factor.

The GCF of 30 and 40 is 10.

2. Divide the numerator and denominator by the GCF.

30 ÷ 10 = 3

40 ÷ 10 = 4

3. Write the result.

30/40 simplified is 3/4.

Decimal and percentage equivalents

Decimal equivalent

3/4 = 0.75

Percentage equivalent

3/4 = 75%

Visual fraction bar

75%

The filled part represents 3/4 of one whole.

Cite this result

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

30/40 in simplest form is 3/4, found by dividing 30 and 40 by their greatest common factor, 10.
ILoveFractions, https://www.ilovefractions.com/tools/fraction-simplifier/30-40/, retrieved September 2, 2026

APA

ILoveFractions. (2026). 30/40 Simplified = 3/4. ILoveFractions.com. Retrieved September 2, 2026, from https://www.ilovefractions.com/tools/fraction-simplifier/30-40/

MLA

"30/40 Simplified = 3/4." ILoveFractions.com, https://www.ilovefractions.com/tools/fraction-simplifier/30-40/. Accessed 2 September 2026.

Need to simplify a different fraction?

Use the main fraction simplifier for any numerator and denominator.

Open the Fraction Simplifier