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A shop owner sold 27 books on Friday. This was 9 more than the number of books he sold on Thursday. Identifyan equation and its solution that shows the number of books he sold on Thursday.

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Given:

A shop owner sold 27 books on Friday.

This was 9 more than the number of books he sold on Thursday.

Let, the number of books shop owner sold on thursday is x .

The eqaution is given as,


27=9+x

Now, solve the equation,


\begin{gathered} 27=9+x \\ x=27-9 \\ x=18 \end{gathered}

Answer: the number of books sold on thursday is 18.

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