Respuesta :

Answer:

A) 75°

Step-by-step explanation:

[tex]x=55+50=180[/tex]

[tex]x+105=180[/tex]

[tex]x=180-105[/tex]

[tex]x=75[/tex]

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hope it helps...

have a great day!!

The answer is going to be 75 :) :)