Solutions by everydaycalculation.com
1st number: 2 6/12, 2nd number: 4 6/12
3012 - 5412 is -21.
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Related: 60/12-54/12 30/24-54/12 30/12-54/24 90/12-54/12 30/36-54/12 30/12-54/36 30/60-54/12 30/12-54/60 30/84-54/12 30/12-54/84
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