Solutions by everydaycalculation.com
1st number: 1 5/10, 2nd number: 7 5/10
1510 - 7510 is -61.
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Related: 30/10-75/10 15/20-75/10 15/10-75/20 45/10-75/10 15/30-75/10 15/10-75/30 75/10-75/10 15/50-75/10 15/10-75/50 15/70-75/10 15/10-75/70
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