Solutions by everydaycalculation.com
1st number: 1 9/21, 2nd number: 4/21
3021 - 421 is 2621.
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Related: 60/21-4/21 30/21-8/21 30/42-4/21 30/21-4/42 90/21-4/21 30/21-12/21 30/63-4/21 30/21-4/63 30/21-20/21 30/21-28/21
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