Find the variables and the terms in the following algebraic expressions.
`2n-12`

Answer

To solve the question "Find the variables and the terms in the following algebraic expression: `2n - 12`", we will break it down step by step.

### Step 1: Identify the variables
A variable is a symbol that represents a number that can change or vary. In the expression `2n - 12`, we need to look for any letters that represent a variable.

- In this case, the letter `n` is present in the expression. Therefore, the variable is:
- **Variable:** n

### Step 2: Count the number of variables
Now, we will count how many different variables are present in the expression.

- There is only one variable, which is `n`.
- **Number of Variables:** 1

### Step 3: Identify the terms
Terms are the parts of an expression that are separated by addition or subtraction. In the expression `2n - 12`, we can identify the terms by looking for these operations.

- The expression `2n - 12` consists of two parts:
- The first term is `2n`
- The second term is `-12`

### Step 4: List the terms
Now, we will write down the identified terms.

- **Terms:** 2n, -12

### Step 5: Count the number of terms
Finally, we will count how many terms we have identified.

- There are two terms in the expression.
- **Number of Terms:** 2

### Final Answer
- **Variables:** n
- **Number of Variables:** 1
- **Terms:** 2n, -12
- **Number of Terms:** 2

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