Solutions by everydaycalculation.com
424 - 624 is -112.
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Related: 8/24-6/24 4/24-12/24 4/48-6/24 4/24-6/48 12/24-6/24 4/24-18/24 4/72-6/24 4/24-6/72 20/24-6/24 4/24-30/24 28/24-6/24 4/24-42/24
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