Solutions by everydaycalculation.com
1st number: 4 2/10, 2nd number: 4 5/10
4210 - 4510 is -310.
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Related: 84/10-45/10 42/10-90/10 42/20-45/10 42/10-45/20 42/30-45/10 42/10-45/30 42/50-45/10 42/10-45/50 42/70-45/10 42/10-45/70
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