Solutions by everydaycalculation.com
1st number: 4 0/3, 2nd number: 3/10
123 + 310 is 4310.
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Related: 24/3+3/10 12/3+6/10 12/6+3/10 12/3+3/20 36/3+3/10 12/3+9/10 12/9+3/10 12/3+3/30 60/3+3/10 12/3+15/10 12/15+3/10 12/3+3/50 84/3+3/10 12/3+21/10 12/21+3/10 12/3+3/70
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