Solutions by everydaycalculation.com
1st number: 1 6/12, 2nd number: 6 9/12
1812 - 8112 is -214.
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Related: 36/12-81/12 18/24-81/12 18/12-81/24 54/12-81/12 18/36-81/12 18/12-81/36 90/12-81/12 18/60-81/12 18/12-81/60 18/84-81/12 18/12-81/84
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