Solutions by everydaycalculation.com
1st number: 6/63, 2nd number: 3 5/9
663 - 329 is -21863.
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Related: 12/63-32/9 6/63-64/9 6/63-32/18 18/63-32/9 6/63-96/9 6/63-32/27 30/63-32/9 6/63-32/45 42/63-32/9 6/63-32/63
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