Solutions by everydaycalculation.com
1st number: 3 1/3, 2nd number: 15/21
103 + 1521 is 8521.
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Related: 20/3+15/21 10/3+30/21 10/6+15/21 10/3+15/42 30/3+15/21 10/3+45/21 10/9+15/21 10/3+15/63 50/3+15/21 10/3+75/21 10/15+15/21 70/3+15/21 10/21+15/21
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