Solutions by everydaycalculation.com
1st number: 1 2/10, 2nd number: 5/20
1210 - 520 is 1920.
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Related: 24/10-5/20 12/10-10/20 12/20-5/20 12/10-5/40 36/10-5/20 12/10-15/20 12/30-5/20 12/10-5/60 60/10-5/20 12/10-25/20 12/50-5/20 84/10-5/20 12/10-35/20 12/70-5/20
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