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Simplify 21/21
21/21 simplified is 1/1 = 1.0000. Free fraction calculator with GCD and decimal conversion.
1/1 = 1.0000
GCD of 21 and 21 is 21. Simplified: 21/21 / 21/21 = 1/1 = 1.0000
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 |
|---|---|
| 21 / 16 | 21/16 = 1.3125 |
| 21 / 19 | 21/19 = 1.1053 |
| 21 / 20 | 21/20 = 1.0500 |
| 21 / 22 | 21/22 = 0.9545 |
| 21 / 23 | 21/23 = 0.9130 |
| 21 / 26 | 21/26 = 0.8077 |
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.