Solutions by everydaycalculation.com
1st number: 9/20, 2nd number: 2 4/10
920 - 2410 is -3920.
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Related: 18/20-24/10 9/20-48/10 9/40-24/10 9/20-24/20 27/20-24/10 9/20-72/10 9/60-24/10 9/20-24/30 45/20-24/10 9/20-24/50 63/20-24/10 9/20-24/70
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