Solutions by everydaycalculation.com
1st number: 1 3/12, 2nd number: 4/12
1512 - 412 is 1112.
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Related: 30/12-4/12 15/12-8/12 15/24-4/12 15/12-4/24 45/12-4/12 15/36-4/12 15/12-4/36 75/12-4/12 15/12-20/12 15/60-4/12 15/12-4/60 15/12-28/12 15/84-4/12 15/12-4/84
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