Solutions by everydaycalculation.com
1st number: 4 1/5, 2nd number: 4 5/10
215 - 4510 is -310.
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Related: 42/5-45/10 21/5-90/10 21/10-45/10 21/5-45/20 63/5-45/10 21/15-45/10 21/5-45/30 21/25-45/10 21/5-45/50 21/35-45/10 21/5-45/70
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