Respuesta :

Answer:

[tex]x=20[/tex]°

Step-by-step explanation:

→ [tex]x+100+3x=180[/tex]

→ [tex]4x+100=180[/tex]

→ [tex]4x=180-100[/tex]

→ [tex]4x=80[/tex]

→ [tex]x=\frac{80}{4}=20[/tex]

[tex]x=20[/tex]°

[tex]---------[/tex]

hope it helps...

have a great day!!