Solutions by everydaycalculation.com
1st number: 3 0/10, 2nd number: 4 2/10
3010 - 4210 is -65.
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Related: 60/10-42/10 30/10-84/10 30/20-42/10 30/10-42/20 90/10-42/10 30/10-42/30 30/50-42/10 30/10-42/50 30/70-42/10 30/10-42/70
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