Solutions by everydaycalculation.com
1528 - 812 is -1184.
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Related: 30/28-8/12 15/28-16/12 15/56-8/12 15/28-8/24 45/28-8/12 15/28-24/12 15/84-8/12 15/28-8/36 75/28-8/12 15/28-40/12 15/28-8/60 15/28-56/12 15/28-8/84
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