Solutions by everydaycalculation.com
1st number: 7/12, 2nd number: 4 1/12
712 - 4912 is -72.
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Related: 14/12-49/12 7/12-98/12 7/24-49/12 7/12-49/24 21/12-49/12 7/36-49/12 7/12-49/36 35/12-49/12 7/60-49/12 7/12-49/60 49/12-49/12 7/84-49/12 7/12-49/84
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