Solutions by everydaycalculation.com
1st number: 7/9, 2nd number: 1 1/7
79 - 87 is -2363.
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Related: 14/9-8/7 7/9-16/7 7/18-8/7 7/9-8/14 21/9-8/7 7/9-24/7 7/27-8/7 7/9-8/21 35/9-8/7 7/9-40/7 7/45-8/7 7/9-8/35 49/9-8/7 7/9-56/7 7/63-8/7 7/9-8/49
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