Solutions by everydaycalculation.com
1st number: 3 5/10, 2nd number: 1 5/10
3510 - 1510 is 21.
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Related: 70/10-15/10 35/10-30/10 35/20-15/10 35/10-15/20 35/10-45/10 35/30-15/10 35/10-15/30 35/10-75/10 35/50-15/10 35/10-15/50 35/70-15/10 35/10-15/70
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