Solutions by everydaycalculation.com
1st number: 8/10, 2nd number: 4 8/10
810 - 4810 is -41.
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Related: 16/10-48/10 8/10-96/10 8/20-48/10 8/10-48/20 24/10-48/10 8/30-48/10 8/10-48/30 40/10-48/10 8/50-48/10 8/10-48/50 56/10-48/10 8/70-48/10 8/10-48/70
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