Solutions by everydaycalculation.com
1st number: 2 4/18, 2nd number: 4/18
4018 - 418 is 21.
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Related: 80/18-4/18 40/18-8/18 40/36-4/18 40/18-4/36 40/18-12/18 40/54-4/18 40/18-4/54 40/18-20/18 40/90-4/18 40/18-4/90 40/18-28/18
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