Solutions by everydaycalculation.com
812 - 512 is 14.
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Related: 16/12-5/12 8/12-10/12 8/24-5/12 8/12-5/24 24/12-5/12 8/12-15/12 8/36-5/12 8/12-5/36 40/12-5/12 8/12-25/12 8/60-5/12 8/12-5/60 56/12-5/12 8/12-35/12 8/84-5/12 8/12-5/84
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