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3 and 1/10 - 2 and 1/5

change to improper fractions as difficulty with negative numbers can be avoided by just changing the 1/10 and 1/5 fractions to common denominator.

31/10 - 11/5

change denominator to common 10

31/10 - 22/10

= 9/10

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Q: What is three and one tenth minus two and one fifth?
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