Simplify the Expression (5x + 10): Finding the Common Factor

First, identify the coefficients and the terms in the expression $5x + 10$.

Break down each term:

$5x$ can be written as $5 \cdot x$.

$10$ can be written as $5 \cdot 2$.

The common factor of these two terms is $5$.

Therefore, the factored form of the expression is $5(x + 2)$, and the common factor is $5$.