Solutions by everydaycalculation.com
1st number: 4/10, 2nd number: 2 5/20
410 - 4520 is -3720.
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Related: 8/10-45/20 4/10-90/20 4/20-45/20 4/10-45/40 12/10-45/20 4/30-45/20 4/10-45/60 20/10-45/20 4/50-45/20 28/10-45/20 4/70-45/20
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