Solutions by everydaycalculation.com
1st number: 10 0/3, 2nd number: 4 4/9
303 - 409 is 509.
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Related: 60/3-40/9 30/3-80/9 30/6-40/9 30/3-40/18 90/3-40/9 30/9-40/9 30/3-40/27 30/15-40/9 30/3-40/45 30/21-40/9 30/3-40/63
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