Solutions by everydaycalculation.com
1st number: 12/15, 2nd number: 3 11/15
1215 + 5615 is 6815.
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Related: 24/15+56/15 12/30+56/15 12/15+56/30 36/15+56/15 12/45+56/15 12/15+56/45 60/15+56/15 12/75+56/15 12/15+56/75 84/15+56/15
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