Solutions by everydaycalculation.com
1st number: 1 5/10, 2nd number: 4 9/10
1510 - 4910 is -175.
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Related: 30/10-49/10 15/10-98/10 15/20-49/10 15/10-49/20 45/10-49/10 15/30-49/10 15/10-49/30 75/10-49/10 15/50-49/10 15/10-49/50 15/70-49/10 15/10-49/70
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