Solutions by everydaycalculation.com
242 - 1242 is -521.
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Related: 4/42-12/42 2/42-24/42 2/84-12/42 2/42-12/84 6/42-12/42 2/42-36/42 10/42-12/42 2/42-60/42 14/42-12/42 2/42-84/42
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