Solutions by everydaycalculation.com
The simplest form of 680690 is 6869.
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Equivalent fractions: 1360/1380 340/345 2040/2070 3400/3450 136/138 4760/4830
More fractions: 1360/690 680/1380 2040/690 680/2070 681/690 680/691679/690 680/689
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