Solutions by everydaycalculation.com
1st number: 1 3/18, 2nd number: 9/18
2118 - 918 is 23.
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Related: 42/18-9/18 21/36-9/18 21/18-9/36 63/18-9/18 21/18-27/18 21/54-9/18 21/18-9/54 21/18-45/18 21/90-9/18 21/18-9/90 21/18-63/18
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