Solutions by everydaycalculation.com
1st number: 4 0/3, 2nd number: 6/7
123 + 67 is 347.
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Related: 24/3+6/7 12/3+12/7 12/6+6/7 12/3+6/14 36/3+6/7 12/3+18/7 12/9+6/7 12/3+6/21 60/3+6/7 12/3+30/7 12/15+6/7 12/3+6/35 84/3+6/7 12/3+42/7 12/21+6/7 12/3+6/49
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