Solutions by everydaycalculation.com
The simplest form of 640720 is 89.
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Equivalent fractions: 1280/1440 320/360 1920/2160 3200/3600 128/144 4480/5040
More fractions: 1280/720 640/1440 1920/720 640/2160 641/720 640/721639/720 640/719
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