Solutions by everydaycalculation.com
1st number: 8 0/3, 2nd number: 4/9
243 - 49 is 689.
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Related: 48/3-4/9 24/3-8/9 24/6-4/9 24/3-4/18 72/3-4/9 24/3-12/9 24/9-4/9 24/3-4/27 24/3-20/9 24/15-4/9 24/3-4/45 24/3-28/9 24/21-4/9 24/3-4/63
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