Solutions by everydaycalculation.com
1st number: 12/21, 2nd number: 2 8/21
1221 + 5021 is 6221.
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Related: 24/21+50/21 12/42+50/21 12/21+50/42 36/21+50/21 12/63+50/21 12/21+50/63 60/21+50/21 84/21+50/21
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