Solutions by everydaycalculation.com
1st number: 5/18, 2nd number: 1 18/30
518 - 4830 is -11990.
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Related: 10/18-48/30 5/18-96/30 5/36-48/30 5/18-48/60 15/18-48/30 5/54-48/30 5/18-48/90 25/18-48/30 5/90-48/30 35/18-48/30
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