Respuesta :

choixongdong

Answer:

x = 5

Step-by-step explanation:

Sum of interior angles = 180

so

10x - 4 + 8x + 3 + 91 = 180

18x + 90 = 180

18x = 90

  x = 5

brasbo23

Answer:

X = 5 degrees

Step-by-step explanation:

the sum of all interior angle of a triangle is 180


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