Solutions by everydaycalculation.com
1st number: 5/20, 2nd number: 3 10/20
520 - 7020 is -134.
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Related: 10/20-70/20 5/40-70/20 5/20-70/40 15/20-70/20 5/60-70/20 5/20-70/60 25/20-70/20 35/20-70/20
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