Solutions by everydaycalculation.com
1st number: 1 15/20, 2nd number: 2 1/10
3520 - 2110 is -720.
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Related: 70/20-21/10 35/20-42/10 35/40-21/10 35/20-21/20 35/20-63/10 35/60-21/10 35/20-21/30 35/20-21/50 35/20-21/70
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