Solutions by everydaycalculation.com
1st number: 2/8, 2nd number: 1 3/4
28 + 74 is 21.
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Related: 4/8+7/4 2/8+14/4 2/16+7/4 2/8+7/8 6/8+7/4 2/8+21/4 2/24+7/4 2/8+7/12 10/8+7/4 2/8+35/4 2/40+7/4 2/8+7/20 14/8+7/4 2/8+49/4 2/56+7/4 2/8+7/28
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