Which of the following is an algebraic expression?

10 · ( 3 – 2 )

15 ÷ 5

9 – n

4 + 13

Which of the following is an algebraic expression?

10 · ( 3 – 2 )

15 ÷ 5

9 – n

4 + 13

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9-n

Is an **Algebraic expression** because algebraic expression has a variable such as (n) and it does not have any numbers

**WHILE **

4+13=17

10 · ( 3 – 2 ) = 10

15 ÷ 5 =3

Those are a **NUMBERS,** they only has numbers not varibles

I hope this helps :)

There are many ways to express NUMBERS.

10 · ( 3 – 2 ) = **10 ------**

15 ÷ 5 = **3 ------
Single Other Number**

4 + 13 = **17 ** --------** **

Above are **numerical expressions**. What does that mean? You have two or more numbers with certain operations (like +, -, multiplication... and more) that combine these numbers so that they can convert into a
**single other number**.

9 – n

The above is an **Algebraic expression**. An **
algebraic expression** has a variable (like "n") and it does not have a **
single other number** (unless stated or can be solved...you will learn this later in the course). But what you need to know here is that if I were to make n = 1, then the
**algebraic expression** would convert into a **
numerical expression** and the **
single other number** would be 8. But I can also change my assumption and say that n=2 and then my
**single other number** would be 7. This answer is different from 8. So an algebraic expression can change unlike the numerical expressions that surround it in your original question.

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