Solutions by everydaycalculation.com
1st number: 1/3, 2nd number: 5 5/9
13 - 509 is -479.
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Related: 2/3-50/9 1/6-50/9 1/3-50/18 1/9-50/9 1/3-50/27 5/3-50/9 1/15-50/9 1/3-50/45 7/3-50/9 1/21-50/9 1/3-50/63
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