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Simplify 42:84
The simplified ratio of 42:84 is 1:2. Free ratio calculator with GCD breakdown.
1:2
GCD of 42 and 84 is 42. Simplified: 42/42 : 84/42 = 1:2
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 |
|---|---|
| 42 / 79 | 42:79 |
| 42 / 82 | 21:41 |
| 42 / 83 | 42:83 |
| 42 / 85 | 42:85 |
| 42 / 86 | 21:43 |
| 42 / 89 | 42:89 |
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.