Solutions by everydaycalculation.com
1st number: 6 0/9, 2nd number: 2 0/9
549 + 189 is 81.
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Related: 54/9+36/9 54/18+18/9 54/9+54/9 54/27+18/9 54/9+18/27 54/9+90/9 54/45+18/9 54/9+18/45 54/63+18/9 54/9+18/63
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