Solutions by everydaycalculation.com
1st number: 1 5/10, 2nd number: 4 5/10
1510 - 4510 is -31.
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Related: 30/10-45/10 15/10-90/10 15/20-45/10 15/10-45/20 45/10-45/10 15/30-45/10 15/10-45/30 75/10-45/10 15/50-45/10 15/10-45/50 15/70-45/10 15/10-45/70
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