Solutions by everydaycalculation.com
636 - 1036 is -19.
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Related: 12/36-10/36 6/36-20/36 6/72-10/36 6/36-10/72 18/36-10/36 6/36-30/36 30/36-10/36 6/36-50/36 42/36-10/36 6/36-70/36
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