Answer:
[tex]12x+14[/tex]
Step-by-step explanation:
Add up all the side lengths:
[tex](2x)+(x+13)+(6x)+(3x+1)[/tex]
Remove parenthesis:
[tex]2x+x+13+6x+3x+1[/tex]
Group like terms:
[tex](2x+x+6x+3x)+(13+1)[/tex]
Simplify:
