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Simplify 420/80
420/80 simplified is 21/4 = 5.2500. Free fraction calculator with GCD and decimal conversion.
21/4 = 5.2500
GCD of 420 and 80 is 20. Simplified: 420/20 / 80/20 = 21/4 = 5.2500
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 / 75 | 28/5 = 5.6000 |
| 420 / 78 | 70/13 = 5.3846 |
| 420 / 79 | 420/79 = 5.3165 |
| 420 / 81 | 140/27 = 5.1852 |
| 420 / 82 | 210/41 = 5.1220 |
| 420 / 85 | 84/17 = 4.9412 |
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.