Solutions by everydaycalculation.com
The simplest form of 640670 is 6467.
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Equivalent fractions: 1280/1340 320/335 1920/2010 3200/3350 128/134 4480/4690
More fractions: 1280/670 640/1340 1920/670 640/2010 641/670 640/671639/670 640/669
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