Solutions by everydaycalculation.com
1st number: 6 4/6, 2nd number: 4 4/6
406 + 286 is 343.
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Related: 80/6+28/6 40/6+56/6 40/12+28/6 40/6+28/12 40/6+84/6 40/18+28/6 40/6+28/18 40/30+28/6 40/6+28/30 40/42+28/6 40/6+28/42
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