Solutions by everydaycalculation.com
1st number: 9/20, 2nd number: 3 0/20
920 - 6020 is -5120.
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Related: 18/20-60/20 9/40-60/20 9/20-60/40 27/20-60/20 9/60-60/20 45/20-60/20 63/20-60/20
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