Solutions by everydaycalculation.com
1st number: 4/12, 2nd number: 3 4/12
412 - 4012 is -31.
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Related: 8/12-40/12 4/12-80/12 4/24-40/12 4/12-40/24 4/36-40/12 4/12-40/36 20/12-40/12 4/60-40/12 4/12-40/60 28/12-40/12 4/84-40/12 4/12-40/84
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