1. You need to remove the parenthesis, each term or symbol outside of the parenthesis affect each term inside the parenthesis:
[tex]\begin{gathered} =9x-(9\cdot4)+2x-14 \\ =9x-36+2x-14 \\ \end{gathered}[/tex]2. You add or substract similar terms:
[tex]=11x-50[/tex]