Question

find the value of x.

Explanation:

Step1: Recall exterior - angle property

The exterior - angle of a triangle is equal to the sum of the two non - adjacent interior angles. So, \(137=x + 28\).

Step2: Solve for \(x\)

Subtract 28 from both sides of the equation: \(x=137 - 28\).
\(x = 109\)

Answer:

\(109\)