Solutions by everydaycalculation.com
1st number: 12/20, 2nd number: 2 11/12
1220 - 3512 is -13960.
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Related: 24/20-35/12 12/20-70/12 12/40-35/12 12/20-35/24 36/20-35/12 12/60-35/12 12/20-35/36 60/20-35/12 12/20-35/60 84/20-35/12 12/20-35/84
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