Solutions by everydaycalculation.com
1st number: 6 0/10, 2nd number: 9 0/10
6010 - 9010 is -31.
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Related: 60/20-90/10 60/10-90/20 60/30-90/10 60/10-90/30 60/50-90/10 60/10-90/50 60/70-90/10 60/10-90/70
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