Solutions by everydaycalculation.com
1st number: 5 0/9, 2nd number: 4/9
459 + 49 is 499.
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Related: 90/9+4/9 45/9+8/9 45/18+4/9 45/9+4/18 45/9+12/9 45/27+4/9 45/9+4/27 45/9+20/9 45/9+4/45 45/9+28/9 45/63+4/9 45/9+4/63
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