Question

What is the value of b?

Answer 1

angles in a triangle add up to 180

so 5b+4b+3b=180

simplifed is 12b=180

so b=15

Answer 2

b =15

Explanation:

The sum of the angles of a triangle is 180

5b+ 4b+ 3b = 180

12b = 180

Divide by 12

12b/12 =180/12

b =15