Solutions by everydaycalculation.com
1st number: 7 5/10, 2nd number: 2 7/10
7510 + 2710 is 515.
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Related: 75/10+54/10 75/20+27/10 75/10+27/20 75/10+81/10 75/30+27/10 75/10+27/30 75/50+27/10 75/10+27/50 75/70+27/10 75/10+27/70
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