Solutions by everydaycalculation.com
1st number: 10/20, 2nd number: 1 15/20
1020 - 3520 is -54.
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Related: 10/20-70/20 10/40-35/20 10/20-35/40 30/20-35/20 10/60-35/20 10/20-35/60 50/20-35/20 70/20-35/20
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