Solutions by everydaycalculation.com
1st number: 5 0/2, 2nd number: 3/9
102 - 39 is 143.
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Related: 20/2-3/9 10/2-6/9 10/4-3/9 10/2-3/18 30/2-3/9 10/6-3/9 10/2-3/27 50/2-3/9 10/2-15/9 10/2-3/45 70/2-3/9 10/2-21/9 10/14-3/9 10/2-3/63
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