Solutions by everydaycalculation.com
1st number: 6/70, 2nd number: 2 5/10
670 - 2510 is -16970.
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Related: 12/70-25/10 6/70-50/10 6/70-25/20 18/70-25/10 6/70-75/10 6/70-25/30 30/70-25/10 6/70-25/50 42/70-25/10 6/70-25/70
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