Solutions by everydaycalculation.com
89 - 918 is 718.
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Related: 16/9-9/18 8/18-9/18 8/9-9/36 24/9-9/18 8/9-27/18 8/27-9/18 8/9-9/54 40/9-9/18 8/9-45/18 8/45-9/18 8/9-9/90 56/9-9/18 8/9-63/18 8/63-9/18
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