Solutions by everydaycalculation.com
1st number: 2/10, 2nd number: 1 5/10
210 - 1510 is -1310.
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Related: 4/10-15/10 2/10-30/10 2/20-15/10 2/10-15/20 6/10-15/10 2/10-45/10 2/30-15/10 2/10-15/30 2/10-75/10 2/50-15/10 2/10-15/50 14/10-15/10 2/70-15/10 2/10-15/70
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