Solutions by everydaycalculation.com
1st number: 4 1/12, 2nd number: 6 9/12
4912 - 8112 is -83.
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Related: 98/12-81/12 49/24-81/12 49/12-81/24 49/36-81/12 49/12-81/36 49/60-81/12 49/12-81/60 49/84-81/12 49/12-81/84
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