Respuesta :

faelure

Answer: x=38

Step-by-step explanation:

Every internal angle within a triangle produces a sum of 180. Knowing this, we can write an equation out to add all the angles up to equal 180 degrees.

2x-15+x+x+43=180

From there we just solve for x step by step:

4x+28=180

4x=152

x=38

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