Solutions by everydaycalculation.com
49 - 47 is -863.
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Related: 8/9-4/7 4/9-8/7 4/18-4/7 4/9-4/14 12/9-4/7 4/9-12/7 4/27-4/7 4/9-4/21 20/9-4/7 4/9-20/7 4/45-4/7 4/9-4/35 28/9-4/7 4/9-28/7 4/63-4/7 4/9-4/49
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