Solutions by everydaycalculation.com
1st number: 6 4/10, 2nd number: 2/10
6410 - 210 is 315.
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Related: 64/10-4/10 64/20-2/10 64/10-2/20 64/10-6/10 64/30-2/10 64/10-2/30 64/50-2/10 64/10-2/50 64/10-14/10 64/70-2/10 64/10-2/70
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