Solutions by everydaycalculation.com
1st number: 18/21, 2nd number: 2 8/21
1821 - 5021 is -3221.
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Related: 36/21-50/21 18/42-50/21 18/21-50/42 54/21-50/21 18/63-50/21 18/21-50/63 90/21-50/21
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