Respuesta :

Answer: x= 22.5, angle B = 67.5

Step-by-step explanation:

90+3x+x= 180

4x = 90

x=22.5

3(22.5)= 67.5

707554

Answer:

x = 22.5° B = 67.5

Step-by-step explanation:

90° + 3x° + x° = 180°

4x = 90°

x = 22.5°