Solutions by everydaycalculation.com
1st number: 3 4/12, 2nd number: 7 6/12
4012 - 9012 is -256.
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Related: 80/12-90/12 40/24-90/12 40/12-90/24 40/36-90/12 40/12-90/36 40/60-90/12 40/12-90/60 40/84-90/12 40/12-90/84
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