Solutions by everydaycalculation.com
1st number: 1 6/9, 2nd number: 3/9
159 + 39 is 21.
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Related: 30/9+3/9 15/9+6/9 15/18+3/9 15/9+3/18 45/9+3/9 15/27+3/9 15/9+3/27 75/9+3/9 15/9+15/9 15/45+3/9 15/9+3/45 15/9+21/9 15/63+3/9 15/9+3/63
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