Answer:
Expression are not equivalent.
Step-by-step Explanation:
To determine whether the expressions [tex]3x + 2x + x[/tex] and [tex]7x[/tex] are equivalent, we can simplify the expression [tex]3x + 2x + x[/tex] and compare the result with [tex]7x[/tex].
[tex]3x + 2x + x[/tex]
Combine like terms:
[tex]5x + x[/tex]
Combine further:
[tex]6x[/tex]
Now, we can see that the simplified expression [tex]6x + x[/tex] is not equivalent to [tex]7x[/tex].
Therefore, by substitution, we can confirm that [tex]3x + 2x + x[/tex] and [tex]7x[/tex] are not equivalent expressions.
