Solutions by everydaycalculation.com
1st number: 2 0/3, 2nd number: 10/21
63 + 1021 is 5221.
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Related: 12/3+10/21 6/3+20/21 6/3+10/42 18/3+10/21 6/3+30/21 6/9+10/21 6/3+10/63 30/3+10/21 6/3+50/21 6/15+10/21 42/3+10/21 6/3+70/21 6/21+10/21
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