Solutions by everydaycalculation.com
1st number: 7/9, 2nd number: 1 6/9
79 - 159 is -89.
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Related: 14/9-15/9 7/9-30/9 7/18-15/9 7/9-15/18 21/9-15/9 7/9-45/9 7/27-15/9 7/9-15/27 35/9-15/9 7/9-75/9 7/45-15/9 7/9-15/45 49/9-15/9 7/63-15/9 7/9-15/63
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