Solutions by everydaycalculation.com
1st number: 2/21, 2nd number: 1 15/21
221 - 3621 is -3421.
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Related: 4/21-36/21 2/21-72/21 2/42-36/21 2/21-36/42 6/21-36/21 2/63-36/21 2/21-36/63 10/21-36/21 14/21-36/21
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