Solutions by everydaycalculation.com
1st number: 7 0/12, 2nd number: 7 6/12
8412 - 9012 is -12.
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Related: 84/24-90/12 84/12-90/24 84/36-90/12 84/12-90/36 84/60-90/12 84/12-90/60 84/12-90/84
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