Solutions by everydaycalculation.com
1st number: 5/20, 2nd number: 4 10/20
520 - 9020 is -174.
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Related: 10/20-90/20 5/40-90/20 5/20-90/40 15/20-90/20 5/60-90/20 5/20-90/60 25/20-90/20 35/20-90/20
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