Solutions by everydaycalculation.com
1st number: 5/90, 2nd number: 1 8/10
590 - 1810 is -15790.
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Related: 10/90-18/10 5/90-36/10 5/90-18/20 15/90-18/10 5/90-54/10 5/90-18/30 25/90-18/10 5/90-90/10 5/90-18/50 35/90-18/10 5/90-18/70
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