Solutions by everydaycalculation.com
1st number: 6/12, 2nd number: 7 6/12
612 - 9012 is -71.
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Related: 6/24-90/12 6/12-90/24 18/12-90/12 6/36-90/12 6/12-90/36 30/12-90/12 6/60-90/12 6/12-90/60 42/12-90/12 6/84-90/12 6/12-90/84
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