Solutions by everydaycalculation.com
1st number: 9/20, 2nd number: 4 9/10
920 - 4910 is -8920.
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Related: 18/20-49/10 9/20-98/10 9/40-49/10 9/20-49/20 27/20-49/10 9/60-49/10 9/20-49/30 45/20-49/10 9/20-49/50 63/20-49/10 9/20-49/70
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