Solutions by everydaycalculation.com
1st number: 1 8/10, 2nd number: 3 15/20
1810 - 7520 is -3920.
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Related: 36/10-75/20 18/20-75/20 18/10-75/40 54/10-75/20 18/30-75/20 18/10-75/60 90/10-75/20 18/50-75/20 18/70-75/20
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