Solutions by everydaycalculation.com
1st number: 6 0/3, 2nd number: 2 0/9
183 + 189 is 81.
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Related: 36/3+18/9 18/3+36/9 18/6+18/9 54/3+18/9 18/3+54/9 18/9+18/9 18/3+18/27 90/3+18/9 18/3+90/9 18/15+18/9 18/3+18/45 18/21+18/9 18/3+18/63
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