Solutions by everydaycalculation.com
1st number: 12/20, 2nd number: 2 9/20
1220 - 4920 is -3720.
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Related: 24/20-49/20 12/20-98/20 12/40-49/20 12/20-49/40 36/20-49/20 12/60-49/20 12/20-49/60 60/20-49/20 84/20-49/20
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