Solutions by everydaycalculation.com
1st number: 5/12, 2nd number: 3 4/12
512 - 4012 is -3512.
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Related: 10/12-40/12 5/12-80/12 5/24-40/12 5/12-40/24 15/12-40/12 5/36-40/12 5/12-40/36 25/12-40/12 5/60-40/12 5/12-40/60 35/12-40/12 5/84-40/12 5/12-40/84
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