Question

What is the value of b? I'll mark the first correct answer brainliest.

Answer 1

Answer:

Step-by-step explanation:

Exterior angle of a triangle is equal to the sum of opposite interior angles

13b - 48 = (9b - 47) + (b + 44)

Add the like terms

13b - 48 = 10b - 3

Add 48 to both the sides

13b - 48 +48 = 10b - 3 +48

13b = 10b + 45

Subtract 10b from both sides

13b - 10b = 10b + 45 - 10b

3b = 45

Divide both sides by 3

3b/3 = 45/3

b = 15

Answer 2

Answer:

b=15

Step-by-step explanation:

Since the angle with measurement is the exterior angle than the the two other angles added up are equal to it. When you add it up it becomes a simple equation where b=15.