Solutions by everydaycalculation.com
1st number: 2 0/9, 2nd number: 8 0/9
189 - 729 is -61.
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Related: 36/9-72/9 18/9-72/18 54/9-72/9 18/27-72/9 18/9-72/27 90/9-72/9 18/45-72/9 18/9-72/45 18/63-72/9 18/9-72/63
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