Respuesta :

boatengalbert291
70 + (8x + 2) + 60 =180
132 + 8x = 180
8x = 180 - 132
8x = 48
Divide through by 8
x=6

A) x=6

B) 50

Step-by-step explanation:

[tex]8x + 2 + 70 + 60 = 180[/tex]

[tex]8x = 180 - 132[/tex]

[tex]8x = 48[/tex]

[tex]x = 6[/tex]

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[tex] \angle \: b = 8x + 2[/tex]

[tex]8(6) + 2[/tex]

[tex]50[/tex]

[tex] \angle \: b = 50[/tex]

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