Question

Marta said 50 + one-half m = 120 is an equation, while Maribel argued that it is an expression. Determine who is correct and explain why.

Answer 1

Sample Response: Marta is correct. This is an equation. The statement includes an equal sign. Equations include an equal sign, expressions do not include an equal sign.

Answer 2

Marta

Explanation:

We are given that

`50+(1)/(2)m=120`

We have to find who is correct and explain.

We know that

Equation: It is mathematical sentence that combines numbers and variables which shows the equality of two expressions.

Example:

`x+y=3`

Expression: It is mathematical phrase that combines numbers and variables

using mathematical operators.It can be evaluated but not solved.

Example:

`x+y`

By definitions

`50+(1)/(2)m=120`

It is in equation form.

Therefore, Marta is correct.