Solutions by everydaycalculation.com
1st number: 1 1/9, 2nd number: 9/10
109 - 910 is 1990.
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Related: 20/9-9/10 10/9-18/10 10/18-9/10 10/9-9/20 30/9-9/10 10/9-27/10 10/27-9/10 10/9-9/30 50/9-9/10 10/9-45/10 10/45-9/10 10/9-9/50 70/9-9/10 10/9-63/10 10/63-9/10 10/9-9/70
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