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