Solutions by everydaycalculation.com
1st number: 2 0/20, 2nd number: 1/20
4020 - 120 is 3920.
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Related: 80/20-1/20 40/20-2/20 40/20-1/40 40/20-3/20 40/60-1/20 40/20-1/60 40/20-5/20 40/20-7/20
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