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Simplify 21:35
The simplified ratio of 21:35 is 3:5. Free ratio calculator with GCD breakdown.
3:5
GCD of 21 and 35 is 7. Simplified: 21/7 : 35/7 = 3:5
How This Was Calculated
Simplification: Divide both terms by their GCD.A:B = (A/GCD) : (B/GCD)
Solving proportions: A/B = C/D — cross-multiply to find the missing value.
Scaling: Multiply both terms by the scale factor.
Quick Reference Table
| Input | Result |
|---|---|
| 21 / 30 | 7:10 |
| 21 / 33 | 7:11 |
| 21 / 34 | 21:34 |
| 21 / 36 | 7:12 |
| 21 / 37 | 21:37 |
| 21 / 40 | 21:40 |
Frequently Asked Questions
What is a ratio?
A ratio compares two quantities by division.
How do I simplify a ratio?
Divide both numbers by their greatest common divisor (GCD).
Can ratios have decimal values?
Yes, but simplified ratios are typically expressed as whole numbers.