Solutions by everydaycalculation.com
1st number: 4 0/3, 2nd number: 4/12
123 + 412 is 133.
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Related: 24/3+4/12 12/3+8/12 12/6+4/12 12/3+4/24 36/3+4/12 12/9+4/12 12/3+4/36 60/3+4/12 12/3+20/12 12/15+4/12 12/3+4/60 84/3+4/12 12/3+28/12 12/21+4/12 12/3+4/84
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