Solutions by everydaycalculation.com
1st number: 1 2/10, 2nd number: 1 3/12
1210 + 1512 is 4920.
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Related: 24/10+15/12 12/10+30/12 12/20+15/12 12/10+15/24 36/10+15/12 12/10+45/12 12/30+15/12 12/10+15/36 60/10+15/12 12/10+75/12 12/50+15/12 12/10+15/60 84/10+15/12 12/70+15/12 12/10+15/84
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