Solutions by everydaycalculation.com
The simplest form of 640960 is 23.
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Equivalent fractions: 1280/1920 320/480 1920/2880 3200/4800 128/192 4480/6720
More fractions: 1280/960 640/1920 1920/960 640/2880 641/960 640/961639/960 640/959
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