Solutions by everydaycalculation.com
1st number: 7/12, 2nd number: 3 9/12
712 - 4512 is -196.
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Related: 14/12-45/12 7/12-90/12 7/24-45/12 7/12-45/24 21/12-45/12 7/36-45/12 7/12-45/36 35/12-45/12 7/60-45/12 7/12-45/60 49/12-45/12 7/84-45/12 7/12-45/84
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