Solutions by everydaycalculation.com
14 - 1214 is -1728.
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Related: 2/4-12/14 1/4-24/14 1/8-12/14 1/4-12/28 3/4-12/14 1/4-36/14 1/12-12/14 1/4-12/42 5/4-12/14 1/4-60/14 1/20-12/14 1/4-12/70 7/4-12/14 1/4-84/14 1/28-12/14 1/4-12/98
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