Solutions by everydaycalculation.com
16 - 15 is -130.
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Related: 2/6-1/5 1/6-2/5 1/12-1/5 1/6-1/10 3/6-1/5 1/6-3/5 1/18-1/5 1/6-1/15 5/6-1/5 1/30-1/5 1/6-1/25 7/6-1/5 1/6-7/5 1/42-1/5 1/6-1/35
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