Solutions by everydaycalculation.com
328 - 1428 is -1128.
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Related: 6/28-14/28 3/56-14/28 3/28-14/56 9/28-14/28 3/28-42/28 3/84-14/28 3/28-14/84 15/28-14/28 3/28-70/28 21/28-14/28 3/28-98/28
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