Solutions by everydaycalculation.com
1st number: 9/20, 2nd number: 4 0/10
920 - 4010 is -7120.
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Related: 18/20-40/10 9/20-80/10 9/40-40/10 9/20-40/20 27/20-40/10 9/60-40/10 9/20-40/30 45/20-40/10 9/20-40/50 63/20-40/10 9/20-40/70
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