Solutions by everydaycalculation.com
1st number: 3/20, 2nd number: 1 10/20
320 - 3020 is -2720.
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Related: 6/20-30/20 3/20-60/20 3/40-30/20 3/20-30/40 9/20-30/20 3/20-90/20 3/60-30/20 3/20-30/60 15/20-30/20 21/20-30/20
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