Solutions by everydaycalculation.com
1st number: 10/21, 2nd number: 1 19/21
1021 + 4021 is 5021.
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Related: 20/21+40/21 10/21+80/21 10/42+40/21 10/21+40/42 30/21+40/21 10/63+40/21 10/21+40/63 50/21+40/21 70/21+40/21
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