Solutions by everydaycalculation.com
1st number: 1 1/7, 2nd number: 1 5/10
87 - 1510 is -514.
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Related: 16/7-15/10 8/7-30/10 8/14-15/10 8/7-15/20 24/7-15/10 8/7-45/10 8/21-15/10 8/7-15/30 40/7-15/10 8/7-75/10 8/35-15/10 8/7-15/50 56/7-15/10 8/49-15/10 8/7-15/70
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