Respuesta :

lesandisusanya

Answer:

b = 34°

Step-by-step explanation:

b + 115° + 31° = 180°

b + 146° = 180

b = 180° - 146°

b = 34°

Answer:

[tex] {b}^{o} = {34}^{o} [/tex]

Step-by-step explanation:

Hint :

Sum of angles = 180°

Simplify :

[tex] {115}^{o} + {31}^{o} + {b}^{o} = {180}^{o} [/tex]

[tex] {146}^{o} + {b}^{o} = {180}^{o} [/tex]

[tex] {b}^{o} = {180}^{o} - {146}^{o} [/tex]

[tex] {b}^{o} = {34}^{o} [/tex]

Hope it is helpful...

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