Solutions by everydaycalculation.com
1st number: 3 3/8, 2nd number: 7 7/8
278 + 638 is 454.
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Related: 54/8+63/8 27/16+63/8 27/8+63/16 81/8+63/8 27/24+63/8 27/8+63/24 27/40+63/8 27/8+63/40 27/56+63/8 27/8+63/56
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