Question

What is the value of x

Answer 1

C. x = 20

Explanation:

The sum of a triangles angles are 180 degrees, given that we can add all the angles together and set them equal to 180.

(x)+(7x-5)+(x+5)=180

Now simplify

9x=180

Divide 9 from both sides to find the value of x

x=20.