Solutions by everydaycalculation.com
1st number: 3/20, 2nd number: 6 8/12
320 - 8012 is -39160.
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Related: 6/20-80/12 3/40-80/12 3/20-80/24 9/20-80/12 3/60-80/12 3/20-80/36 15/20-80/12 3/20-80/60 21/20-80/12 3/20-80/84
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