Solutions by everydaycalculation.com
1st number: 3/12, 2nd number: 1 3/5
312 - 85 is -2720.
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Related: 6/12-8/5 3/12-16/5 3/24-8/5 3/12-8/10 9/12-8/5 3/12-24/5 3/36-8/5 3/12-8/15 15/12-8/5 3/12-40/5 3/60-8/5 3/12-8/25 21/12-8/5 3/12-56/5 3/84-8/5 3/12-8/35
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