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Simplify 420/20
420/20 simplified is 21/1 = 21.0000. Free fraction calculator with GCD and decimal conversion.
21/1 = 21.0000
GCD of 420 and 20 is 20. Simplified: 420/20 / 20/20 = 21/1 = 21.0000
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 |
|---|---|
| 420 / 15 | 28/1 = 28.0000 |
| 420 / 18 | 70/3 = 23.3333 |
| 420 / 19 | 420/19 = 22.1053 |
| 420 / 21 | 20/1 = 20.0000 |
| 420 / 22 | 210/11 = 19.0909 |
| 420 / 25 | 84/5 = 16.8000 |
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.