Solutions by everydaycalculation.com
1st number: 10/18, 2nd number: 1 5/10
1018 - 1510 is -1718.
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Related: 20/18-15/10 10/18-30/10 10/36-15/10 10/18-15/20 30/18-15/10 10/18-45/10 10/54-15/10 10/18-15/30 50/18-15/10 10/18-75/10 10/90-15/10 10/18-15/50 70/18-15/10 10/18-15/70
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