Solutions by everydaycalculation.com
1st number: 14 0/3, 2nd number: 7/9
423 + 79 is 1339.
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Related: 84/3+7/9 42/3+14/9 42/6+7/9 42/3+7/18 42/3+21/9 42/9+7/9 42/3+7/27 42/3+35/9 42/15+7/9 42/3+7/45 42/3+49/9 42/21+7/9 42/3+7/63
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