To solve the problem, we need to simplify the expression $x + 6 + 7x$.

Step 1: Combine like terms.

Combine the $x$ terms:

$x + 7x = 8x$

Step 2: Combine all the terms together.

The simplified expression is:

$8x + 6$

Answer: The expression equivalent to $x + 6 + 7x$ is:

$\boxed{8x + 6}$

Let me know if you have any questions or need further details!

Related Questions:

1. How do you combine like terms in algebraic expressions?
2. What is the process of simplifying expressions involving variables?
3. How can you identify like terms in an equation?
4. What are the rules for combining variables and constants?
5. How would the expression change if the numbers were negative?

Tip: Always group and combine like terms (variables and constants separately) to simplify algebraic expressions.