Solutions by everydaycalculation.com
1st number: 18/20, 2nd number: 4 10/20
1820 - 9020 is -185.
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Related: 36/20-90/20 18/40-90/20 18/20-90/40 54/20-90/20 18/60-90/20 18/20-90/60 90/20-90/20
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