Solutions by everydaycalculation.com
1st number: 2 8/21, 2nd number: 20/21
5021 - 2021 is 107.
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Related: 50/21-40/21 50/42-20/21 50/21-20/42 50/21-60/21 50/63-20/21 50/21-20/63
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