Solutions by everydaycalculation.com
712 - 112 is 12.
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Related: 14/12-1/12 7/12-2/12 7/24-1/12 7/12-1/24 21/12-1/12 7/12-3/12 7/36-1/12 7/12-1/36 35/12-1/12 7/12-5/12 7/60-1/12 7/12-1/60 49/12-1/12 7/12-7/12 7/84-1/12 7/12-1/84
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