Solutions by everydaycalculation.com
1st number: 2 6/12, 2nd number: 2 11/12
3012 - 3512 is -512.
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Related: 60/12-35/12 30/12-70/12 30/24-35/12 30/12-35/24 90/12-35/12 30/36-35/12 30/12-35/36 30/60-35/12 30/12-35/60 30/84-35/12 30/12-35/84
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