Solutions by everydaycalculation.com
1st number: 4 2/3, 2nd number: 8/9
143 + 89 is 509.
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Related: 28/3+8/9 14/3+16/9 14/6+8/9 14/3+8/18 42/3+8/9 14/3+24/9 14/9+8/9 14/3+8/27 70/3+8/9 14/3+40/9 14/15+8/9 14/3+8/45 98/3+8/9 14/3+56/9 14/21+8/9 14/3+8/63
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