Respuesta :

Answer:71.5

Step-by-step explanation:

2d+37+1+38=2d+76=180

180-76=2d+143

143divided by 2 =71.5

Answer:

d = 57 degrees.

Step-by-step explanation:

The 3 angles in a triangle add up to 180 degrees, so:

2d + 1 + 38 + 27 = 180

2d = 180 - (1 + 38 + 27)

2d = 180 - 66 = 114

d = 114/2

d = 57 degrees.