Solutions by everydaycalculation.com
1st number: 4/10, 2nd number: 3 5/10
410 + 3510 is 3910.
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Related: 8/10+35/10 4/10+70/10 4/20+35/10 4/10+35/20 12/10+35/10 4/30+35/10 4/10+35/30 20/10+35/10 4/50+35/10 4/10+35/50 28/10+35/10 4/70+35/10 4/10+35/70
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