Solutions by everydaycalculation.com
29 - 39 is -19.
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Related: 4/9-3/9 2/9-6/9 2/18-3/9 2/9-3/18 6/9-3/9 2/27-3/9 2/9-3/27 10/9-3/9 2/9-15/9 2/45-3/9 2/9-3/45 14/9-3/9 2/9-21/9 2/63-3/9 2/9-3/63
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