Solutions by everydaycalculation.com
1st number: 1/8, 2nd number: 9 1/7
18 - 647 is -50556.
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Related: 2/8-64/7 1/16-64/7 1/8-64/14 3/8-64/7 1/24-64/7 1/8-64/21 5/8-64/7 1/40-64/7 1/8-64/35 7/8-64/7 1/56-64/7 1/8-64/49
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