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Simplify 9/21
9/21 simplified is 3/7 = 0.4286. Free fraction calculator with GCD and decimal conversion.
3/7 = 0.4286
GCD of 9 and 21 is 3. Simplified: 9/3 / 21/3 = 3/7 = 0.4286
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 |
|---|---|
| 9 / 16 | 9/16 = 0.5625 |
| 9 / 19 | 9/19 = 0.4737 |
| 9 / 20 | 9/20 = 0.4500 |
| 9 / 22 | 9/22 = 0.4091 |
| 9 / 23 | 9/23 = 0.3913 |
| 9 / 26 | 9/26 = 0.3462 |
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.