Write the algebraic expression for the statement
Take a number. After adding $9$ to it, multiply it by $7 .$

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Solution

Algebraic expression :- It is the expression made up of variables and constants by performing some algebraic expression like addition, subtraction, multiplication and division.
Terms:- A term is the part of the algebraic expression

Let a number be $a$

Performing addition operation we get $a + 9$
Performing multiplication operation we get $(a + 9) . 7$

Hence, $(a + 9) . 7$ is the required algebraic expression

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