Solutions by everydaycalculation.com
1st number: 1 5/10, 2nd number: 2 1/10
1510 - 2110 is -35.
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Related: 30/10-21/10 15/10-42/10 15/20-21/10 15/10-21/20 45/10-21/10 15/10-63/10 15/30-21/10 15/10-21/30 75/10-21/10 15/50-21/10 15/10-21/50 15/70-21/10 15/10-21/70
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