Solutions by everydaycalculation.com
1st number: 3 0/9, 2nd number: 6 0/9
279 + 549 is 91.
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Related: 54/9+54/9 27/18+54/9 27/9+54/18 81/9+54/9 27/9+54/27 27/45+54/9 27/9+54/45 27/63+54/9 27/9+54/63
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