Solutions by everydaycalculation.com
1st number: 2/10, 2nd number: 4 2/10
210 - 4210 is -41.
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Related: 4/10-42/10 2/10-84/10 2/20-42/10 2/10-42/20 6/10-42/10 2/30-42/10 2/10-42/30 2/50-42/10 2/10-42/50 14/10-42/10 2/70-42/10 2/10-42/70
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