Solutions by everydaycalculation.com
1st number: 3 4/12, 2nd number: 1 9/12
4012 - 2112 is 1912.
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Related: 80/12-21/12 40/12-42/12 40/24-21/12 40/12-21/24 40/12-63/12 40/36-21/12 40/12-21/36 40/60-21/12 40/12-21/60 40/84-21/12 40/12-21/84
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