Solutions by everydaycalculation.com
828 - 512 is -1184.
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Related: 16/28-5/12 8/28-10/12 8/56-5/12 8/28-5/24 24/28-5/12 8/28-15/12 8/84-5/12 8/28-5/36 40/28-5/12 8/28-25/12 8/28-5/60 56/28-5/12 8/28-35/12 8/28-5/84
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