Solutions by everydaycalculation.com
112 - 1221 is -4184.
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Related: 2/12-12/21 1/12-24/21 1/24-12/21 1/12-12/42 3/12-12/21 1/12-36/21 1/36-12/21 1/12-12/63 5/12-12/21 1/12-60/21 1/60-12/21 7/12-12/21 1/12-84/21 1/84-12/21
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