Solutions by everydaycalculation.com
1st number: 8/12, 2nd number: 4 1/12
812 - 4912 is -4112.
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Related: 16/12-49/12 8/12-98/12 8/24-49/12 8/12-49/24 24/12-49/12 8/36-49/12 8/12-49/36 40/12-49/12 8/60-49/12 8/12-49/60 56/12-49/12 8/84-49/12 8/12-49/84
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