Solutions by everydaycalculation.com
1st number: 3 0/10, 2nd number: 4 9/10
3010 - 4910 is -1910.
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Related: 60/10-49/10 30/10-98/10 30/20-49/10 30/10-49/20 90/10-49/10 30/10-49/30 30/50-49/10 30/10-49/50 30/70-49/10 30/10-49/70
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