Solutions by everydaycalculation.com
1st number: 1 7/9, 2nd number: 9/10
169 - 910 is 7990.
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Related: 32/9-9/10 16/9-18/10 16/18-9/10 16/9-9/20 48/9-9/10 16/9-27/10 16/27-9/10 16/9-9/30 80/9-9/10 16/9-45/10 16/45-9/10 16/9-9/50 16/9-63/10 16/63-9/10 16/9-9/70
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