Solutions by everydaycalculation.com
The simplest form of 420406 is 3029.
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Equivalent fractions: 840/812 210/203 1260/1218 2100/2030 2940/2842 60/58
More fractions: 840/406 420/812 1260/406 420/1218 421/406 420/407419/406 420/405
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