Solutions by everydaycalculation.com
415 - 45 is -815.
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Related: 8/15-4/5 4/15-8/5 4/30-4/5 4/15-4/10 12/15-4/5 4/15-12/5 4/45-4/5 4/15-4/15 20/15-4/5 4/15-20/5 4/75-4/5 4/15-4/25 28/15-4/5 4/15-28/5 4/15-4/35
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