Question

5 what is the value of x? show your work. 8x° 17x° 20x°

Explanation:

Step1: Use the exterior - angle property

The exterior - angle of a triangle is equal to the sum of the two non - adjacent interior angles. So, $20x=8x + 17x$.

Step2: Simplify the equation

Combine like terms on the right - hand side: $20x=25x$.
Subtract $20x$ from both sides: $0 = 25x-20x$.
$0 = 5x$.

Step3: Solve for x

Divide both sides by 5: $x = 0$.

Answer:

$x = 0$