Solutions by everydaycalculation.com
1st number: 9/10, 2nd number: 1 5/40
910 - 4540 is -940.
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Related: 18/10-45/40 9/10-90/40 9/20-45/40 9/10-45/80 27/10-45/40 9/30-45/40 45/10-45/40 9/50-45/40 63/10-45/40 9/70-45/40
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