Solutions by everydaycalculation.com
1st number: 4 0/3, 2nd number: 4/15
123 + 415 is 6415.
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Related: 24/3+4/15 12/3+8/15 12/6+4/15 12/3+4/30 36/3+4/15 12/3+12/15 12/9+4/15 12/3+4/45 60/3+4/15 12/3+20/15 12/15+4/15 12/3+4/75 84/3+4/15 12/3+28/15 12/21+4/15
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