Question

simplify: x + x + x + x

Explanation:

Step1: Count the number of x terms

We have \( x + x + x + x \), which is 4 instances of \( x \) being added together.

Step2: Combine like terms

When adding like terms (terms with the same variable), we can use the concept of multiplication as repeated addition. So, \( x + x + x + x = 4\times x = 4x \).

Answer:

\( 4x \)