Solutions by everydaycalculation.com
1st number: 2/20, 2nd number: 2 2/20
220 - 4220 is -21.
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Related: 4/20-42/20 2/20-84/20 2/40-42/20 2/20-42/40 6/20-42/20 2/60-42/20 2/20-42/60 10/20-42/20 14/20-42/20
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