Solutions by everydaycalculation.com
1st number: 2/8, 2nd number: 1 2/4
28 - 64 is -54.
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Related: 4/8-6/4 2/8-12/4 2/16-6/4 2/8-6/8 6/8-6/4 2/8-18/4 2/24-6/4 2/8-6/12 10/8-6/4 2/8-30/4 2/40-6/4 2/8-6/20 14/8-6/4 2/8-42/4 2/56-6/4 2/8-6/28
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