Solutions by everydaycalculation.com
1st number: 9 0/10, 2nd number: 2 1/10
9010 - 2110 is 6910.
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Related: 90/10-42/10 90/20-21/10 90/10-21/20 90/10-63/10 90/30-21/10 90/10-21/30 90/50-21/10 90/10-21/50 90/70-21/10 90/10-21/70
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