Solutions by everydaycalculation.com
1st number: 8/20, 2nd number: 1 5/20
820 - 2520 is -1720.
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Related: 16/20-25/20 8/20-50/20 8/40-25/20 8/20-25/40 24/20-25/20 8/20-75/20 8/60-25/20 8/20-25/60 40/20-25/20 56/20-25/20
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