Solutions by everydaycalculation.com
1st number: 4 2/10, 2nd number: 2 0/10
4210 + 2010 is 315.
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Related: 84/10+20/10 42/10+40/10 42/20+20/10 42/10+60/10 42/30+20/10 42/10+20/30 42/50+20/10 42/10+20/50 42/70+20/10 42/10+20/70
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