Solutions by everydaycalculation.com
1st number: 3/12, 2nd number: 7 0/12
312 - 8412 is -274.
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Related: 6/12-84/12 3/24-84/12 3/12-84/24 9/12-84/12 3/36-84/12 3/12-84/36 15/12-84/12 3/60-84/12 3/12-84/60 21/12-84/12 3/84-84/12
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