Solutions by everydaycalculation.com
1st number: 1 1/3, 2nd number: 8/12
43 + 812 is 21.
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Related: 8/3+8/12 4/3+16/12 4/6+8/12 4/3+8/24 12/3+8/12 4/3+24/12 4/9+8/12 4/3+8/36 20/3+8/12 4/3+40/12 4/15+8/12 4/3+8/60 28/3+8/12 4/3+56/12 4/21+8/12 4/3+8/84
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