Solutions by everydaycalculation.com
1st number: 2 0/3, 2nd number: 4/21
63 - 421 is 3821.
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Related: 12/3-4/21 6/3-8/21 6/3-4/42 18/3-4/21 6/3-12/21 6/9-4/21 6/3-4/63 30/3-4/21 6/3-20/21 6/15-4/21 42/3-4/21 6/3-28/21 6/21-4/21
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