Solutions by everydaycalculation.com
1st number: 1 15/20, 2nd number: 2 4/10
3520 - 2410 is -1320.
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Related: 70/20-24/10 35/20-48/10 35/40-24/10 35/20-24/20 35/20-72/10 35/60-24/10 35/20-24/30 35/20-24/50 35/20-24/70
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