Solutions by everydaycalculation.com
1st number: 1 2/4, 2nd number: 3/6
64 + 36 is 21.
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Related: 12/4+3/6 6/8+3/6 6/4+3/12 18/4+3/6 6/4+9/6 6/12+3/6 6/4+3/18 30/4+3/6 6/4+15/6 6/20+3/6 6/4+3/30 42/4+3/6 6/4+21/6 6/28+3/6 6/4+3/42
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