Solutions by everydaycalculation.com
1st number: 10/18, 2nd number: 1 8/10
1018 - 1810 is -5645.
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Related: 20/18-18/10 10/18-36/10 10/36-18/10 10/18-18/20 30/18-18/10 10/18-54/10 10/54-18/10 10/18-18/30 50/18-18/10 10/18-90/10 10/90-18/10 10/18-18/50 70/18-18/10 10/18-18/70
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