Solutions by everydaycalculation.com
1st number: 8 0/10, 2nd number: 9 0/10
8010 - 9010 is -11.
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Related: 80/20-90/10 80/10-90/20 80/30-90/10 80/10-90/30 80/50-90/10 80/10-90/50 80/70-90/10 80/10-90/70
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