Solutions by everydaycalculation.com
1st number: 15 0/3, 2nd number: 8/9
453 + 89 is 1439.
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Related: 90/3+8/9 45/3+16/9 45/6+8/9 45/3+8/18 45/3+24/9 45/9+8/9 45/3+8/27 45/3+40/9 45/15+8/9 45/3+8/45 45/3+56/9 45/21+8/9 45/3+8/63
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