Classify the following as 'arithmetic expressions' or 'algebraic expressions'.
`12x-56`

Answer

To classify the expression `12x - 56` as either an arithmetic expression or an algebraic expression, we can follow these steps:

### Step 1: Understand the Definitions
- **Arithmetic Expression**: An expression that consists only of numbers and arithmetic operations (like addition, subtraction, multiplication, and division) without any variables.
- **Algebraic Expression**: An expression that contains at least one variable along with constants and arithmetic operations.

### Step 2: Analyze the Given Expression
The expression given is `12x - 56`.

### Step 3: Identify the Components
- **12x**: Here, `x` is a variable, and `12` is a coefficient (a constant that multiplies the variable).
- **-56**: This is a constant.

### Step 4: Determine the Type of Expression
Since the expression `12x - 56` contains the variable `x`, it qualifies as an algebraic expression.

### Conclusion
Thus, the expression `12x - 56` is classified as an **algebraic expression**.

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