Solutions by everydaycalculation.com
1st number: 6 4/6, 2nd number: 7 3/6
406 + 456 is 856.
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Related: 80/6+45/6 40/6+90/6 40/12+45/6 40/6+45/12 40/18+45/6 40/6+45/18 40/30+45/6 40/6+45/30 40/42+45/6 40/6+45/42
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