Solutions by everydaycalculation.com
1st number: 1 2/3, 2nd number: 15/21
53 + 1521 is 5021.
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Related: 10/3+15/21 5/3+30/21 5/6+15/21 5/3+15/42 15/3+15/21 5/3+45/21 5/9+15/21 5/3+15/63 25/3+15/21 5/3+75/21 5/15+15/21 35/3+15/21 5/21+15/21
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