Solutions by everydaycalculation.com
The simplest form of 6721428 is 817.
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Equivalent fractions: 1344/2856 336/714 2016/4284 224/476 3360/7140 4704/9996 96/204
More fractions: 1344/1428 672/2856 2016/1428 672/4284 673/1428 672/1429671/1428 672/1427
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