Solutions by everydaycalculation.com
718 - 35 is -1990.
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Related: 14/18-3/5 7/18-6/5 7/36-3/5 7/18-3/10 21/18-3/5 7/18-9/5 7/54-3/5 7/18-3/15 35/18-3/5 7/18-15/5 7/90-3/5 7/18-3/25 49/18-3/5 7/18-21/5 7/18-3/35
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