We are given the following expression
[tex]9x+x-4x+x[/tex]
We are asked to simplify the expression by combining the like terms
Let's combine the like terms step by step
[tex]\begin{gathered} 9x+x-4x+x \\ 9x+x+x-4x \\ 9x+2x-4x \\ 11x-4x \\ 7x \end{gathered}[/tex]
Therefore, the correct option is A.
The simplified form of the expression is 7x.
