angieee66 angieee66

12-10-2020
Mathematics

contestada

help pleas, i’m fr lost

help pleas im fr lost class=

Respuesta :

samkr14 samkr14

12-10-2020

Answer:

x = 6°

Step-by-step explanation:

We know that all the interior angles of a triangle sum up to 180°.

(7x+3)°+(80°)+(55°) = 180°

(7x+3)°+(135°) = 180°

(7x+3)°= 45°

7x = 42°

x = 6°

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