Solutions by everydaycalculation.com
1st number: 4/10, 2nd number: 4 9/10
410 - 4910 is -92.
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Related: 8/10-49/10 4/10-98/10 4/20-49/10 4/10-49/20 12/10-49/10 4/30-49/10 4/10-49/30 20/10-49/10 4/50-49/10 4/10-49/50 28/10-49/10 4/70-49/10 4/10-49/70
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