Solutions by everydaycalculation.com
1st number: 1 2/6, 2nd number: 6/7
86 + 67 is 4621.
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Related: 16/6+6/7 8/6+12/7 8/12+6/7 8/6+6/14 24/6+6/7 8/6+18/7 8/18+6/7 8/6+6/21 40/6+6/7 8/6+30/7 8/30+6/7 8/6+6/35 56/6+6/7 8/6+42/7 8/42+6/7 8/6+6/49
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