Solutions by everydaycalculation.com
1st number: 5/10, 2nd number: 4 5/10
510 - 4510 is -41.
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Related: 5/10-90/10 5/20-45/10 5/10-45/20 15/10-45/10 5/30-45/10 5/10-45/30 25/10-45/10 5/50-45/10 5/10-45/50 35/10-45/10 5/70-45/10 5/10-45/70
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