Respuesta :

Americ
Triangles= 180°

Add the 3 angles to equal 180°


17x + (10x - 5) + 50= 180
combine like terms

27x + 45= 180
subtract 45 from both sides

27x= 135
divide both sides by 27

x= 5


ANSWER: x= 5

Hope this helps! :)