Solutions by everydaycalculation.com
1st number: 4/20, 2nd number: 2 10/20
420 - 5020 is -2310.
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Related: 8/20-50/20 4/40-50/20 4/20-50/40 12/20-50/20 4/60-50/20 4/20-50/60 28/20-50/20
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