Solutions by everydaycalculation.com
1st number: 4 1/12, 2nd number: 3 9/12
4912 - 4512 is 13.
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Related: 98/12-45/12 49/12-90/12 49/24-45/12 49/12-45/24 49/36-45/12 49/12-45/36 49/60-45/12 49/12-45/60 49/84-45/12 49/12-45/84
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