Solutions by everydaycalculation.com
1st number: 1 3/12, 2nd number: 1 8/12
1512 - 2012 is -512.
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Related: 30/12-20/12 15/12-40/12 15/24-20/12 15/12-20/24 45/12-20/12 15/12-60/12 15/36-20/12 15/12-20/36 75/12-20/12 15/60-20/12 15/12-20/60 15/84-20/12 15/12-20/84
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