Solutions by everydaycalculation.com
1st number: 1 15/20, 2nd number: 2 8/20
3520 - 4820 is -1320.
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Related: 70/20-48/20 35/20-96/20 35/40-48/20 35/20-48/40 35/60-48/20 35/20-48/60
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