Solutions by everydaycalculation.com
1st number: 1 8/10, 2nd number: 3/12
1810 + 312 is 4120.
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Related: 36/10+3/12 18/10+6/12 18/20+3/12 18/10+3/24 54/10+3/12 18/10+9/12 18/30+3/12 18/10+3/36 90/10+3/12 18/10+15/12 18/50+3/12 18/10+3/60 18/10+21/12 18/70+3/12 18/10+3/84
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