Solutions by everydaycalculation.com
1st number: 2 6/12, 2nd number: 6 9/12
3012 - 8112 is -174.
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Related: 60/12-81/12 30/24-81/12 30/12-81/24 90/12-81/12 30/36-81/12 30/12-81/36 30/60-81/12 30/12-81/60 30/84-81/12 30/12-81/84
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