Solutions by everydaycalculation.com
1st number: 3/10, 2nd number: 3 2/10
310 - 3210 is -2910.
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Related: 6/10-32/10 3/10-64/10 3/20-32/10 3/10-32/20 9/10-32/10 3/10-96/10 3/30-32/10 3/10-32/30 15/10-32/10 3/50-32/10 3/10-32/50 21/10-32/10 3/70-32/10 3/10-32/70
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