Solutions by everydaycalculation.com
1st number: 1 1/4, 2nd number: 5/12
54 + 512 is 53.
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Related: 10/4+5/12 5/4+10/12 5/8+5/12 5/4+5/24 15/4+5/12 5/4+15/12 5/12+5/12 5/4+5/36 25/4+5/12 5/4+25/12 5/20+5/12 5/4+5/60 35/4+5/12 5/4+35/12 5/28+5/12 5/4+5/84
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