Solutions by everydaycalculation.com
1st number: 12/18, 2nd number: 1 12/18
1218 - 3018 is -11.
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Related: 24/18-30/18 12/18-60/18 12/36-30/18 12/18-30/36 36/18-30/18 12/18-90/18 12/54-30/18 12/18-30/54 60/18-30/18 12/90-30/18 12/18-30/90 84/18-30/18
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