Solutions by everydaycalculation.com
1st number: 2 4/18, 2nd number: 9/10
4018 - 910 is 11990.
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Related: 80/18-9/10 40/18-18/10 40/36-9/10 40/18-9/20 40/18-27/10 40/54-9/10 40/18-9/30 40/18-45/10 40/90-9/10 40/18-9/50 40/18-63/10 40/18-9/70
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