Solutions by everydaycalculation.com
1st number: 4 1/12, 2nd number: 4 6/12
4912 - 5412 is -512.
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Related: 98/12-54/12 49/24-54/12 49/12-54/24 49/36-54/12 49/12-54/36 49/60-54/12 49/12-54/60 49/84-54/12 49/12-54/84
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