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