Solutions by everydaycalculation.com
1st number: 8/10, 2nd number: 4 2/10
810 - 4210 is -175.
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Related: 16/10-42/10 8/10-84/10 8/20-42/10 8/10-42/20 24/10-42/10 8/30-42/10 8/10-42/30 40/10-42/10 8/50-42/10 8/10-42/50 56/10-42/10 8/70-42/10 8/10-42/70
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