Solutions by everydaycalculation.com
1st number: 3/12, 2nd number: 4 0/12
312 - 4812 is -154.
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Related: 6/12-48/12 3/12-96/12 3/24-48/12 3/12-48/24 9/12-48/12 3/36-48/12 3/12-48/36 15/12-48/12 3/60-48/12 3/12-48/60 21/12-48/12 3/84-48/12 3/12-48/84
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