Respuesta :

musiclover10045

both angles are equal so you have

104 = 3x-19

add 19 to both sides

123 = 3x

divide both sides by 3

x = 123/3

x = 41

budwilkins
yes they are both vertical, therefore equal, so set them equal and solve, as did "musiclover".
they are neither supplementary nor complementary.

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