Solutions by everydaycalculation.com
1st number: 12/20, 2nd number: 2 2/20
1220 - 4220 is -32.
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Related: 24/20-42/20 12/20-84/20 12/40-42/20 12/20-42/40 36/20-42/20 12/60-42/20 12/20-42/60 60/20-42/20 84/20-42/20
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