Respuesta :

The sum of the angles in a triangle is 180 degrees. Considering the given triangle, it means that

29 + 4x + 9 + x + 17 = 180

We would collect like terms. Thus, we have

4x + x + 29 + 9 + 17 = 180

5x + 55 = 180

5x = 180 - 55 = 125

x = 125/5

x = 25

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