Solutions by everydaycalculation.com
1st number: 18/20, 2nd number: 1 9/16
1820 - 2516 is -5380.
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Related: 36/20-25/16 18/20-50/16 18/40-25/16 18/20-25/32 54/20-25/16 18/20-75/16 18/60-25/16 18/20-25/48 90/20-25/16 18/20-25/80
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