Solutions by everydaycalculation.com
27 - 89 is -3863.
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Related: 4/7-8/9 2/7-16/9 2/14-8/9 2/7-8/18 6/7-8/9 2/7-24/9 2/21-8/9 2/7-8/27 10/7-8/9 2/7-40/9 2/35-8/9 2/7-8/45 14/7-8/9 2/7-56/9 2/49-8/9 2/7-8/63
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