Question

find the value of x.

Explanation:

Step1: Recall angle - sum property

The sum of interior angles of a triangle is 180°. So, \(x + 39+64 = 180\).

Step2: Simplify the equation

\(x+103 = 180\).

Step3: Solve for \(x\)

Subtract 103 from both sides: \(x=180 - 103\).

Answer:

77