Solutions by everydaycalculation.com
1st number: 3/12, 2nd number: 2 0/12
312 - 2412 is -74.
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Related: 6/12-24/12 3/12-48/12 3/24-24/12 9/12-24/12 3/12-72/12 3/36-24/12 3/12-24/36 15/12-24/12 3/60-24/12 3/12-24/60 21/12-24/12 3/84-24/12 3/12-24/84
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