Answer:
3x + 7
Step-by-step explanation:
The initial expression is:
4x + 7 - x
To find an equivalent expression, we need to identify the like terms.
Then, 4x and -x are like terms because they have the same variable x.
It means that we can add those terms, so we get:
4x + 7 - x = (4x - x) + 7
= 3x + 7
Therefore, an equivalent expression is:
3x + 7