Solutions by everydaycalculation.com
1st number: 8/10, 2nd number: 4 9/10
810 - 4910 is -4110.
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Related: 16/10-49/10 8/10-98/10 8/20-49/10 8/10-49/20 24/10-49/10 8/30-49/10 8/10-49/30 40/10-49/10 8/50-49/10 8/10-49/50 56/10-49/10 8/70-49/10 8/10-49/70
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