Solutions by everydaycalculation.com
815 - 715 is 115.
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Related: 16/15-7/15 8/15-14/15 8/30-7/15 8/15-7/30 24/15-7/15 8/15-21/15 8/45-7/15 8/15-7/45 40/15-7/15 8/15-35/15 8/75-7/15 8/15-7/75 56/15-7/15 8/15-49/15
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