Solutions by everydaycalculation.com
1st number: 6/20, 2nd number: 1 5/20
620 - 2520 is -1920.
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Related: 12/20-25/20 6/20-50/20 6/40-25/20 6/20-25/40 18/20-25/20 6/20-75/20 6/60-25/20 6/20-25/60 30/20-25/20 42/20-25/20
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