Question

13, 119°, (-3x + 143)°

Explanation:

Step1: Identify vertical angles

Vertical angles are equal, so set \(119 = -3x + 143\).

Step2: Solve for \(x\)

Subtract 143 from both sides: \(119 - 143 = -3x\)
Simplify: \(-24 = -3x\)
Divide by -3: \(x = \frac{-24}{-3} = 8\).

Answer:

\(x = 8\)