Solutions by everydaycalculation.com
38 - 512 is -124.
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Related: 6/8-5/12 3/8-10/12 3/16-5/12 3/8-5/24 9/8-5/12 3/8-15/12 3/24-5/12 3/8-5/36 15/8-5/12 3/8-25/12 3/40-5/12 3/8-5/60 21/8-5/12 3/8-35/12 3/56-5/12 3/8-5/84
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