Solutions by everydaycalculation.com
1st number: 15/20, 2nd number: 2 4/10
1520 - 2410 is -3320.
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Related: 30/20-24/10 15/20-48/10 15/40-24/10 15/20-24/20 45/20-24/10 15/20-72/10 15/60-24/10 15/20-24/30 75/20-24/10 15/20-24/50 15/20-24/70
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