Solutions by everydaycalculation.com
1st number: 4 5/10, 2nd number: 3 5/10
4510 + 3510 is 81.
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Related: 90/10+35/10 45/10+70/10 45/20+35/10 45/10+35/20 45/30+35/10 45/10+35/30 45/50+35/10 45/10+35/50 45/70+35/10 45/10+35/70
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