Solutions by everydaycalculation.com
1st number: 7 0/9, 2nd number: 6/9
639 - 69 is 193.
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Related: 63/9-12/9 63/18-6/9 63/9-6/18 63/9-18/9 63/27-6/9 63/9-6/27 63/9-30/9 63/45-6/9 63/9-6/45 63/9-42/9 63/9-6/63
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