Solutions by everydaycalculation.com
1st number: 1 8/10, 2nd number: 2 1/10
1810 - 2110 is -310.
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Related: 36/10-21/10 18/10-42/10 18/20-21/10 18/10-21/20 54/10-21/10 18/10-63/10 18/30-21/10 18/10-21/30 90/10-21/10 18/50-21/10 18/10-21/50 18/70-21/10 18/10-21/70
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