🔢
Simplify 20/42
20/42 simplified is 10/21 = 0.4762. Free fraction calculator with GCD and decimal conversion.
10/21 = 0.4762
GCD of 20 and 42 is 2. Simplified: 20/2 / 42/2 = 10/21 = 0.4762
How This Was Calculated
Simplification: Divide numerator and denominator by their GCD.
Addition: a/b + c/d = (ad + bc) / bd
Subtraction: a/b - c/d = (ad - bc) / bd
Multiplication: a/b × c/d = ac / bd
Division: a/b ÷ c/d = ad / bc
Quick Reference Table
| Input | Result |
|---|---|
| 20 / 37 | 20/37 = 0.5405 |
| 20 / 40 | 1/2 = 0.5000 |
| 20 / 41 | 20/41 = 0.4878 |
| 20 / 43 | 20/43 = 0.4651 |
| 20 / 44 | 5/11 = 0.4545 |
| 20 / 47 | 20/47 = 0.4255 |
Frequently Asked Questions
What is a fraction?
A fraction represents a part of a whole, written as numerator/denominator.
How do I simplify fractions?
Divide both numerator and denominator by their greatest common divisor.
Can I add fractions with different denominators?
Yes, the calculator handles common denominators automatically.