Solutions by everydaycalculation.com
23 - 45 is -215.
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Related: 4/3-4/5 2/3-8/5 2/6-4/5 2/3-4/10 6/3-4/5 2/3-12/5 2/9-4/5 2/3-4/15 10/3-4/5 2/3-20/5 2/15-4/5 2/3-4/25 14/3-4/5 2/3-28/5 2/21-4/5 2/3-4/35
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