Solutions by everydaycalculation.com
1st number: 5 0/9, 2nd number: 8/9
459 + 89 is 539.
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Related: 90/9+8/9 45/9+16/9 45/18+8/9 45/9+8/18 45/9+24/9 45/27+8/9 45/9+8/27 45/9+40/9 45/9+8/45 45/9+56/9 45/63+8/9 45/9+8/63
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