Solutions by everydaycalculation.com
1st number: 2 6/12, 2nd number: 3 9/12
3012 - 4512 is -54.
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Related: 60/12-45/12 30/12-90/12 30/24-45/12 30/12-45/24 90/12-45/12 30/36-45/12 30/12-45/36 30/60-45/12 30/12-45/60 30/84-45/12 30/12-45/84
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