Solutions by everydaycalculation.com
1st number: 5 0/6, 2nd number: 7 3/6
306 + 456 is 252.
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Related: 60/6+45/6 30/6+90/6 30/12+45/6 30/6+45/12 90/6+45/6 30/18+45/6 30/6+45/18 30/6+45/30 30/42+45/6 30/6+45/42
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