Solutions by everydaycalculation.com
1st number: 1 2/6, 2nd number: 8/12
86 + 812 is 21.
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Related: 16/6+8/12 8/6+16/12 8/12+8/12 8/6+8/24 24/6+8/12 8/6+24/12 8/18+8/12 8/6+8/36 40/6+8/12 8/6+40/12 8/30+8/12 8/6+8/60 56/6+8/12 8/6+56/12 8/42+8/12 8/6+8/84
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