Solutions by everydaycalculation.com
1st number: 12/18, 2nd number: 1 17/18
1218 - 3518 is -2318.
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Related: 24/18-35/18 12/18-70/18 12/36-35/18 12/18-35/36 36/18-35/18 12/54-35/18 12/18-35/54 60/18-35/18 12/90-35/18 12/18-35/90 84/18-35/18
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