Solutions by everydaycalculation.com
1st number: 4 0/3, 2nd number: 8/9
123 + 89 is 449.
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Related: 24/3+8/9 12/3+16/9 12/6+8/9 12/3+8/18 36/3+8/9 12/3+24/9 12/9+8/9 12/3+8/27 60/3+8/9 12/3+40/9 12/15+8/9 12/3+8/45 84/3+8/9 12/3+56/9 12/21+8/9 12/3+8/63
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