Respuesta :

Answer:

[tex]4.5x+15[/tex]

Step-by-step explanation:

Equilateral triangles have three equal sides.

[tex]1.5x+5+1.5x+5+1.5x+5[/tex]

[tex]1.5x+1.5x+1.5x+5+5+5[/tex]

[tex]=4.5x+15[/tex]

Answer:

4.5x+15

Step-by-step explanation:

Hope this helps!