Solutions by everydaycalculation.com
1st number: 1 8/10, 2nd number: 4 9/10
1810 - 4910 is -3110.
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Related: 36/10-49/10 18/10-98/10 18/20-49/10 18/10-49/20 54/10-49/10 18/30-49/10 18/10-49/30 90/10-49/10 18/50-49/10 18/10-49/50 18/70-49/10 18/10-49/70
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