Solutions by everydaycalculation.com
1st number: 4 0/3, 2nd number: 4 1/12
123 - 4912 is -112.
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Related: 24/3-49/12 12/3-98/12 12/6-49/12 12/3-49/24 36/3-49/12 12/9-49/12 12/3-49/36 60/3-49/12 12/15-49/12 12/3-49/60 84/3-49/12 12/21-49/12 12/3-49/84
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