Solutions by everydaycalculation.com
The simplest form of 640420 is 3221.
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Equivalent fractions: 1280/840 320/210 1920/1260 3200/2100 128/84 4480/2940
More fractions: 1280/420 640/840 1920/420 640/1260 641/420 640/421639/420 640/419
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