Solutions by everydaycalculation.com
1st number: 1 4/8, 2nd number: 3/6
128 + 36 is 21.
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Related: 24/8+3/6 12/16+3/6 12/8+3/12 36/8+3/6 12/8+9/6 12/24+3/6 12/8+3/18 60/8+3/6 12/8+15/6 12/40+3/6 12/8+3/30 84/8+3/6 12/8+21/6 12/56+3/6 12/8+3/42
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