To simplify the expression \(10 + 10x - 5x\), you can combine the like terms.
First, combine the \(10x\) and \(-5x\):
\[ 10x - 5x = 5x \]
Now, substitute that back into the expression:
\[ 10 + 5x \]
Thus, the simplified expression is:
\[ 10 + 5x \]