Solutions by everydaycalculation.com
1st number: 2/8, 2nd number: 7 7/8
28 + 638 is 658.
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Related: 4/8+63/8 2/16+63/8 2/8+63/16 6/8+63/8 2/24+63/8 2/8+63/24 10/8+63/8 2/40+63/8 2/8+63/40 14/8+63/8 2/56+63/8 2/8+63/56
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