Respuesta :

sidthetaco

Answer:

X = 7

Step-by-step explanation:

180=90+4x+6+8x

84=12x

7=x

Answer:

x = 7

Step-by-step explanation:

The 3 angles in a triangle sum to 180°

sum the 3 angles and equate to 180

90 + 8x + 4x + 6 = 180 , that is

12x + 96 = 180 ( subtract 96 from both sides )

12x = 84 ( divide both sides by 12 )

x = 7

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