Solutions by everydaycalculation.com
1st number: 7/12, 2nd number: 4 6/12
712 - 5412 is -4712.
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Related: 14/12-54/12 7/24-54/12 7/12-54/24 21/12-54/12 7/36-54/12 7/12-54/36 35/12-54/12 7/60-54/12 7/12-54/60 49/12-54/12 7/84-54/12 7/12-54/84
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