Solutions by everydaycalculation.com
The simplest form of 21631521 is 721507.
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Equivalent fractions: 4326/3042 6489/4563 721/507
More fractions: 4326/1521 2163/3042 6489/1521 2163/4563 2164/1521 2163/15222162/1521 2163/1520
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