Solutions by everydaycalculation.com
1st number: 4 6/9, 2nd number: 3/9
429 + 39 is 51.
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Related: 84/9+3/9 42/9+6/9 42/18+3/9 42/9+3/18 42/27+3/9 42/9+3/27 42/9+15/9 42/45+3/9 42/9+3/45 42/9+21/9 42/63+3/9 42/9+3/63
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