Solutions by everydaycalculation.com
1st number: 8/9, 2nd number: 2 3/21
89 - 4521 is -7963.
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Related: 16/9-45/21 8/9-90/21 8/18-45/21 8/9-45/42 24/9-45/21 8/27-45/21 8/9-45/63 40/9-45/21 8/45-45/21 56/9-45/21 8/63-45/21
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