Solutions by everydaycalculation.com
1st number: 4 6/12, 2nd number: 1 6/12
5412 - 1812 is 31.
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Related: 54/12-36/12 54/24-18/12 54/12-18/24 54/12-54/12 54/36-18/12 54/12-18/36 54/12-90/12 54/60-18/12 54/12-18/60 54/84-18/12 54/12-18/84
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