Solutions by everydaycalculation.com
1st number: 6/8, 2nd number: 1 2/4
68 - 64 is -34.
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Related: 12/8-6/4 6/8-12/4 6/16-6/4 6/8-6/8 18/8-6/4 6/8-18/4 6/24-6/4 6/8-6/12 30/8-6/4 6/8-30/4 6/40-6/4 6/8-6/20 42/8-6/4 6/8-42/4 6/56-6/4 6/8-6/28
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