Solutions by everydaycalculation.com
89 - 58 is 1972.
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Related: 16/9-5/8 8/9-10/8 8/18-5/8 8/9-5/16 24/9-5/8 8/9-15/8 8/27-5/8 8/9-5/24 40/9-5/8 8/9-25/8 8/45-5/8 8/9-5/40 56/9-5/8 8/9-35/8 8/63-5/8 8/9-5/56
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