Solutions by everydaycalculation.com
1st number: 3/10, 2nd number: 3 5/10
310 - 3510 is -165.
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Related: 6/10-35/10 3/10-70/10 3/20-35/10 3/10-35/20 9/10-35/10 3/30-35/10 3/10-35/30 15/10-35/10 3/50-35/10 3/10-35/50 21/10-35/10 3/70-35/10 3/10-35/70
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