Solutions by everydaycalculation.com
1st number: 1 3/9, 2nd number: 5/12
129 + 512 is 74.
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Related: 24/9+5/12 12/9+10/12 12/18+5/12 12/9+5/24 36/9+5/12 12/9+15/12 12/27+5/12 12/9+5/36 60/9+5/12 12/9+25/12 12/45+5/12 12/9+5/60 84/9+5/12 12/9+35/12 12/63+5/12 12/9+5/84
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