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