Solutions by everydaycalculation.com
1st number: 1 1/3, 2nd number: 9 1/7
43 - 647 is -16421.
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Related: 8/3-64/7 4/6-64/7 4/3-64/14 12/3-64/7 4/9-64/7 4/3-64/21 20/3-64/7 4/15-64/7 4/3-64/35 28/3-64/7 4/21-64/7 4/3-64/49
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