Solutions by everydaycalculation.com
1st number: 1 12/18, 2nd number: 2 6/18
3018 - 4218 is -23.
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Related: 60/18-42/18 30/18-84/18 30/36-42/18 30/18-42/36 90/18-42/18 30/54-42/18 30/18-42/54 30/90-42/18 30/18-42/90
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