Solutions by everydaycalculation.com
1st number: 2/90, 2nd number: 1 5/10
290 - 1510 is -13390.
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Related: 4/90-15/10 2/90-30/10 2/90-15/20 6/90-15/10 2/90-45/10 2/90-15/30 10/90-15/10 2/90-75/10 2/90-15/50 14/90-15/10 2/90-15/70
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