Solutions by everydaycalculation.com
1st number: 3 1/2, 2nd number: 9 8/10
72 - 9810 is -6310.
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Related: 14/2-98/10 7/4-98/10 7/2-98/20 21/2-98/10 7/6-98/10 7/2-98/30 35/2-98/10 7/10-98/10 7/2-98/50 49/2-98/10 7/14-98/10 7/2-98/70
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