Solutions by everydaycalculation.com
1st number: 10/18, 2nd number: 2 6/18
1018 - 4218 is -169.
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Related: 20/18-42/18 10/18-84/18 10/36-42/18 10/18-42/36 30/18-42/18 10/54-42/18 10/18-42/54 50/18-42/18 10/90-42/18 10/18-42/90 70/18-42/18
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