Solutions by everydaycalculation.com
1st number: 1/8, 2nd number: 1 8/20
18 - 2820 is -5140.
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Related: 2/8-28/20 1/8-56/20 1/16-28/20 1/8-28/40 3/8-28/20 1/8-84/20 1/24-28/20 1/8-28/60 5/8-28/20 1/40-28/20 7/8-28/20 1/56-28/20
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