Solutions by everydaycalculation.com
1st number: 8/21, 2nd number: 2 6/21
821 - 4821 is -4021.
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Related: 16/21-48/21 8/21-96/21 8/42-48/21 8/21-48/42 24/21-48/21 8/63-48/21 8/21-48/63 40/21-48/21 56/21-48/21
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