Solutions by everydaycalculation.com
1st number: 2/3, 2nd number: 5 5/9
23 - 509 is -449.
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Related: 4/3-50/9 2/6-50/9 2/3-50/18 6/3-50/9 2/9-50/9 2/3-50/27 10/3-50/9 2/15-50/9 2/3-50/45 14/3-50/9 2/21-50/9 2/3-50/63
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