Solutions by everydaycalculation.com
1st number: 3 3/9, 2nd number: 5 3/9
309 - 489 is -21.
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Related: 60/9-48/9 30/9-96/9 30/18-48/9 30/9-48/18 90/9-48/9 30/27-48/9 30/9-48/27 30/45-48/9 30/9-48/45 30/63-48/9 30/9-48/63
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