Solutions by everydaycalculation.com
1st number: 1 1/15, 2nd number: 6/21
1615 - 621 is 82105.
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Related: 32/15-6/21 16/15-12/21 16/30-6/21 16/15-6/42 48/15-6/21 16/15-18/21 16/45-6/21 16/15-6/63 80/15-6/21 16/15-30/21 16/75-6/21 16/15-42/21
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