Solutions by everydaycalculation.com
1st number: 10/12, 2nd number: 1 3/12
1012 - 1512 is -512.
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Related: 20/12-15/12 10/12-30/12 10/24-15/12 10/12-15/24 30/12-15/12 10/12-45/12 10/36-15/12 10/12-15/36 50/12-15/12 10/12-75/12 10/60-15/12 10/12-15/60 70/12-15/12 10/84-15/12 10/12-15/84
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