Solutions by everydaycalculation.com
1st number: 4 0/3, 2nd number: 7/12
123 + 712 is 5512.
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Related: 24/3+7/12 12/3+14/12 12/6+7/12 12/3+7/24 36/3+7/12 12/3+21/12 12/9+7/12 12/3+7/36 60/3+7/12 12/3+35/12 12/15+7/12 12/3+7/60 84/3+7/12 12/3+49/12 12/21+7/12 12/3+7/84
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