Solutions by everydaycalculation.com
1st number: 4 0/3, 2nd number: 5/7
123 + 57 is 337.
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Related: 24/3+5/7 12/3+10/7 12/6+5/7 12/3+5/14 36/3+5/7 12/3+15/7 12/9+5/7 12/3+5/21 60/3+5/7 12/3+25/7 12/15+5/7 12/3+5/35 84/3+5/7 12/3+35/7 12/21+5/7 12/3+5/49
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