Solutions by everydaycalculation.com
1st number: 15/40, 2nd number: 1 8/10
1540 - 1810 is -5740.
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Related: 30/40-18/10 15/40-36/10 15/80-18/10 15/40-18/20 45/40-18/10 15/40-54/10 15/40-18/30 75/40-18/10 15/40-90/10 15/40-18/50 15/40-18/70
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