hello
to solve for angle x, let's collect like terms
[tex]11x+30=54-5x[/tex]step 1
collect like terms to do this, we'll take variables of x one side of the eqaution and keep non-variables at the other side
[tex]\begin{gathered} 11x+30=54-5x \\ 11x+5x=54-30 \\ 16x=24 \\ \text{divide both sides by 16} \\ \frac{16x}{16}=\frac{24}{16} \\ x=\frac{24}{16}=\frac{6}{4} \end{gathered}[/tex]