We can calculate the perimeter by adding all expressions to get the following:
[tex]P=-3(3x+5)+2x-8+11x+24[/tex]then, we can use the distributive property to get rid of the parenthesis and then add each similar term to get:
[tex]\begin{gathered} P=-3(3x+5)+2x-8+11x+24 \\ =-9x-15+2x-8+11x+24 \\ =-9x+2x+11x-15-8+24 \\ =4x+1 \end{gathered}[/tex]therefore, the expression that represents the perimeter of the triangle is 4x + 1
