Solutions by everydaycalculation.com
1st number: 4 2/10, 2nd number: 8 1/10
4210 - 8110 is -3910.
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Related: 84/10-81/10 42/20-81/10 42/10-81/20 42/30-81/10 42/10-81/30 42/50-81/10 42/10-81/50 42/70-81/10 42/10-81/70
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