Solutions by everydaycalculation.com
49 - 67 is -2663.
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Related: 8/9-6/7 4/9-12/7 4/18-6/7 4/9-6/14 12/9-6/7 4/9-18/7 4/27-6/7 4/9-6/21 20/9-6/7 4/9-30/7 4/45-6/7 4/9-6/35 28/9-6/7 4/9-42/7 4/63-6/7 4/9-6/49
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